diff --git a/src/chp4/stack_example.svg b/src/chp4/stack_example.svg
index f5431a7..b904517 100755
--- a/src/chp4/stack_example.svg
+++ b/src/chp4/stack_example.svg
@@ -1,4 +1,3 @@
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text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2067px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="2079" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="1830" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1945px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(2)</font></b></div></div></div></foreignObject><text x="833" y="1949" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(2)</text></switch></g><rect x="410" y="1690" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1697px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="1709" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="1460" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1575px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(3)</font></b></div></div></div></foreignObject><text x="833" y="1579" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(3)</text></switch></g><rect x="410" y="1320" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1327px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="1339" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="1090" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1205px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(4)</font></b></div></div></div></foreignObject><text x="833" y="1209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(4)</text></switch></g><rect x="410" y="950" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 957px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">square() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="969" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="720" width="845" height="230" fill="#d0cee2" stroke="#56517e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 835px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">square(2)</font></b></div></div></div></foreignObject><text x="833" y="839" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">square(2)</text></switch></g><rect x="410" y="580" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 587px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">main() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="599" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="350" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 465px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">main("2")</font></b></div></div></div></foreignObject><text x="833" y="469" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main("2")</text></switch></g><rect x="410" y="210" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 217px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">[OS-specific startup routine]<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="229" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="2570" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2685px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(0)</font></b></div></div></div></foreignObject><text x="833" y="2689" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(0)</text></switch></g><rect x="1320" y="380" width="370" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 368px; height: 1px; padding-top: 435px; margin-left: 1321px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">Higher </font></i></div><div><i><font color="#666666" style="font-size: 50px;">Addresses</font></i></div></div></div></div></foreignObject><text x="1505" y="439" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Higher...</text></switch></g><path d="M 1526.25 368.5 L 1483.25 368.5 L 1483.25 325.99 L 1446.75 325.99 L 1504.75 271.5 L 1562.75 325.99 L 1526.25 325.99 Z" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="1330" y="870" width="370" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 368px; height: 1px; padding-top: 925px; margin-left: 1331px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">Lower </font></i></div><div><i><font color="#666666" style="font-size: 50px;">Addresses</font></i></div></div></div></div></foreignObject><text x="1515" y="929" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Lower...</text></switch></g><path d="M 1482.75 1011.46 L 1525.75 1011.54 L 1525.62 1074.05 L 1562.12 1074.13 L 1504 1128.5 L 1446.12 1073.88 L 1482.62 1073.96 Z" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="410" y="2430" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2437px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="2449" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="0" y="2630" width="197.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 196px; height: 1px; padding-top: 2685px; margin-left: 0px;"><div style="box-sizing: border-box; font-size: 0px; text-align: right;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"Boom!"<br /></font></i></div></div></div></div></foreignObject><text x="196" y="2689" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"Boom!"&#xa;</text></switch></g><path d="M 207.6 2685 L 410 2685" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200.85 2685 L 209.85 2680.5 L 207.6 2685 L 209.85 2689.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="2260" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 2315px; margin-left: 0px;"><div style="box-sizing: border-box; font-size: 0px; text-align: right;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"1..."</font></i></div></div></div></div></foreignObject><text x="191" y="2319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"1..."</text></switch></g><path d="M 202.6 2315 L 405.5 2315" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 2315 L 204.85 2310.5 L 202.6 2315 L 204.85 2319.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1890" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 1945px; margin-left: 0px;"><div style="box-sizing: border-box; font-size: 0px; text-align: right;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"2..."</font></i></div></div></div></div></foreignObject><text x="191" y="1949" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"2..."</text></switch></g><path d="M 202.6 1945 L 405.5 1945" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 1945 L 204.85 1940.5 L 202.6 1945 L 204.85 1949.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1520" width="197.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 196px; height: 1px; padding-top: 1575px; margin-left: 0px;"><div style="box-sizing: border-box; font-size: 0px; text-align: right;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"3..."</font></i></div></div></div></div></foreignObject><text x="196" y="1579" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"3..."</text></switch></g><path d="M 207.6 1575 L 410.5 1575" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200.85 1575 L 209.85 1570.5 L 207.6 1575 L 209.85 1579.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1150" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 1205px; margin-left: 0px;"><div style="box-sizing: border-box; font-size: 0px; text-align: right;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"4..."</font></i></div></div></div></div></foreignObject><text x="191" y="1209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"4..."</text></switch></g><path d="M 202.6 1205 L 405.5 1205" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 1205 L 204.85 1200.5 L 202.6 1205 L 204.85 1209.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="410" y="2800" width="845" height="450" fill="none" stroke="#666666" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3025px; margin-left: 411px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font color="#666666"><i><b><font style="font-size: 50px;">(Unused Stack Space)<br /></font></b></i></font></div></div></div></foreignObject><text x="833" y="3029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused Stack Space)&#xa;</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="1700px" height="2962px" viewBox="-0.5 -0.5 1700 2962"><defs/><g><rect x="332.5" y="120" width="1000" height="2840" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="3" stroke-dasharray="9 9" pointer-events="all"/><rect x="320" y="0" width="1010" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1008px; height: 1px; padding-top: 55px; margin-left: 321px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font color="#666666" style="font-size: 50px;"><b>Stack Memory</b></font></div></div></div></foreignObject><text x="825" y="59" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Stack Memory</text></switch></g><rect x="410" y="1830" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1945px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(1)</font></b></div></div></div></foreignObject><text x="833" y="1949" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(1)</text></switch></g><rect x="410" y="1690" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1697px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="1709" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="1460" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1575px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(2)</font></b></div></div></div></foreignObject><text x="833" y="1579" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(2)</text></switch></g><rect x="410" y="1320" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1327px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="1339" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="1090" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1205px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(3)</font></b></div></div></div></foreignObject><text x="833" y="1209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(3)</text></switch></g><rect x="410" y="950" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 957px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="969" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="720" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 835px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(4)</font></b></div></div></div></foreignObject><text x="833" y="839" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(4)</text></switch></g><rect x="410" y="580" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 587px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">main() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="599" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="350" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 465px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">main("2")</font></b></div></div></div></foreignObject><text x="833" y="469" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main("2")</text></switch></g><rect x="410" y="210" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 217px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">[OS-specific startup routine]<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="229" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="410" y="2200" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2315px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><b><font style="font-size: 50px;">recursive_count_down(0)</font></b></div></div></div></foreignObject><text x="833" y="2319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">recursive_count_down(0)</text></switch></g><rect x="1320" y="380" width="370" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 368px; height: 1px; padding-top: 435px; margin-left: 1321px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">Higher </font></i></div><div><i><font color="#666666" style="font-size: 50px;">Addresses</font></i></div></div></div></div></foreignObject><text x="1505" y="439" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Higher...</text></switch></g><path d="M 1526.25 368.5 L 1483.25 368.5 L 1483.25 325.99 L 1446.75 325.99 L 1504.75 271.5 L 1562.75 325.99 L 1526.25 325.99 Z" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="1330" y="870" width="370" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 368px; height: 1px; padding-top: 925px; margin-left: 1331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">Lower </font></i></div><div><i><font color="#666666" style="font-size: 50px;">Addresses</font></i></div></div></div></div></foreignObject><text x="1515" y="929" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Lower...</text></switch></g><path d="M 1482.75 1011.46 L 1525.75 1011.54 L 1525.62 1074.05 L 1562.12 1074.13 L 1504 1128.5 L 1446.12 1073.88 L 1482.62 1073.96 Z" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="410" y="2060" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2067px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><i><font style="font-size: 50px;">recursive_count_down() + offset<br /></font></i></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="833" y="2079" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Return Address...</text></switch></g><rect x="0" y="2260" width="197.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 196px; height: 1px; padding-top: 2315px; margin-left: 0px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"Boom!"<br /></font></i></div></div></div></div></foreignObject><text x="196" y="2319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"Boom!"&#xa;</text></switch></g><path d="M 207.6 2315 L 410 2315" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200.85 2315 L 209.85 2310.5 L 207.6 2315 L 209.85 2319.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1890" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 1945px; margin-left: 0px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"1..."</font></i></div></div></div></div></foreignObject><text x="191" y="1949" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"1..."</text></switch></g><path d="M 202.6 1945 L 405.5 1945" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 1945 L 204.85 1940.5 L 202.6 1945 L 204.85 1949.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1520" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 1575px; margin-left: 0px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"2..."</font></i></div></div></div></div></foreignObject><text x="191" y="1579" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"2..."</text></switch></g><path d="M 202.6 1575 L 405.5 1575" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 1575 L 204.85 1570.5 L 202.6 1575 L 204.85 1579.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="1150" width="197.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 196px; height: 1px; padding-top: 1205px; margin-left: 0px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"3..."</font></i></div></div></div></div></foreignObject><text x="196" y="1209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"3..."</text></switch></g><path d="M 207.6 1205 L 410.5 1205" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200.85 1205 L 209.85 1200.5 L 207.6 1205 L 209.85 1209.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="780" width="192.5" height="110" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe flex-end; width: 191px; height: 1px; padding-top: 835px; margin-left: 0px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><i><font color="#666666" style="font-size: 50px;">"4..."</font></i></div></div></div></div></foreignObject><text x="191" y="839" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">"4..."</text></switch></g><path d="M 202.6 835 L 405.5 835" fill="none" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 195.85 835 L 204.85 830.5 L 202.6 835 L 204.85 839.5 Z" fill="#666666" stroke="#666666" stroke-width="3" stroke-miterlimit="10" pointer-events="all"/><rect x="410" y="2430" width="845" height="450" fill="none" stroke="#666666" stroke-width="3" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2655px; margin-left: 411px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font color="#666666"><i><b><font style="font-size: 50px;">(Unused Stack Space)<br /></font></b></i></font></div></div></div></foreignObject><text x="833" y="2659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused Stack Space)&#xa;</text></switch></g></g></svg>
\ No newline at end of file
diff --git a/src/chp4/stack_scaling_1.svg b/src/chp4/stack_scaling_1.svg
index bd2fd6d..4c7f051 100755
--- a/src/chp4/stack_scaling_1.svg
+++ b/src/chp4/stack_scaling_1.svg
@@ -1,4 +1,3 @@
 <?xml version="1.0" encoding="UTF-8"?>
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text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2135px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="2139" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="2435" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2505px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="2509" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="2805" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2875px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="2879" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1095" width="845" height="230" fill="#d0cee2" stroke="#56517e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">square</font></b></font></div></div></div></foreignObject><text x="3015" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">square</text></switch></g><rect x="2592" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="3015" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="2592" y="3315" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3430px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R4</font></b></font></div></div></div></foreignObject><text x="3015" y="3434" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R4</text></switch></g><rect x="2592" y="5015" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 5240px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="3015" y="5244" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="2592" y="2945" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3060px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R5</font></b></font></div></div></div></foreignObject><text x="3015" y="3064" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R5</text></switch></g><rect x="2592" y="2575" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2690px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R6</font></b></font></div></div></div></foreignObject><text x="3015" y="2694" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R6</text></switch></g><rect x="2592" y="2205" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2320px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R7</font></b></font></div></div></div></foreignObject><text x="3015" y="2324" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R7</text></switch></g><rect x="2592" y="1835" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1950px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R8</font></b></font></div></div></div></foreignObject><text x="3015" y="1954" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R8</text></switch></g><ellipse cx="3014.5" cy="200" rx="292.5" ry="195" fill="#f8cecc" stroke="#b85450" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 2723px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"3"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="3015" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 3014.5 395 L 3014.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 3014.5 573.82 L 3006.5 557.82 L 3014.5 561.82 L 3022.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><rect x="2592" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1695" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1765px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1769" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2065" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2135px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2139" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2435" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2505px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2509" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2805" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2875px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2879" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="3175" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3245px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3249" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="4.5" y="495" width="1000" height="2130" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="10" stroke-dasharray="30 30" pointer-events="all"/><rect x="82" y="1095" width="845" height="230" fill="#d0cee2" stroke="#56517e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">square</font></b></font></div></div></div></foreignObject><text x="505" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">square</text></switch></g><rect x="82" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="505" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="82" y="2065" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2290px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="505" y="2294" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="82" y="1835" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1950px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R0</font></b></font></div></div></div></foreignObject><text x="505" y="1954" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R0</text></switch></g><rect x="82" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R1</font></b></font></div></div></div></foreignObject><text x="505" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R1</text></switch></g><ellipse cx="504.5" cy="200" rx="292.5" ry="195" fill="#d5e8d4" stroke="#82b366" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 213px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"1"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="505" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 504.5 395 L 504.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 504.5 573.82 L 496.5 557.82 L 504.5 561.82 L 512.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><rect x="82" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="1695" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1765px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1769" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="4795" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4910px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R0</font></b></font></div></div></div></foreignObject><text x="3015" y="4914" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R0</text></switch></g><rect x="2592" y="4425" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4540px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R1</font></b></font></div></div></div></foreignObject><text x="3015" y="4544" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R1</text></switch></g><rect x="2592" y="4055" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4170px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R2</font></b></font></div></div></div></foreignObject><text x="3015" y="4174" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R2</text></switch></g><rect x="2592" y="3685" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3800px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R3</font></b></font></div></div></div></foreignObject><text x="3015" y="3804" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R3</text></switch></g><rect x="2592" y="3545" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3615px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3619" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="3915" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3985px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3989" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="4285" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; 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text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R9</font></b></font></div></div></div></foreignObject><text x="3015" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R9</text></switch></g><rect x="2592" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 1343px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="1695" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1765px; margin-left: 1343px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="1769" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="2065" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2135px; margin-left: 1343px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="2139" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="2435" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2505px; margin-left: 1343px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="2509" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="3015" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="2592" y="2945" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3060px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R4</font></b></font></div></div></div></foreignObject><text x="3015" y="3064" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R4</text></switch></g><rect x="2592" y="4645" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4870px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="3015" y="4874" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="2592" y="2575" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2690px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R5</font></b></font></div></div></div></foreignObject><text x="3015" y="2694" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R5</text></switch></g><rect x="2592" y="2205" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2320px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R6</font></b></font></div></div></div></foreignObject><text x="3015" y="2324" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R6</text></switch></g><rect x="2592" y="1835" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1950px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R7</font></b></font></div></div></div></foreignObject><text x="3015" y="1954" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R7</text></switch></g><rect x="2592" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R8</font></b></font></div></div></div></foreignObject><text x="3015" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R8</text></switch></g><ellipse cx="3014.5" cy="200" rx="292.5" ry="195" fill="#f8cecc" stroke="#b85450" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 2723px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"3"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="3015" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 3014.5 395 L 3014.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 3014.5 573.82 L 3006.5 557.82 L 3014.5 561.82 L 3022.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><rect x="2592" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1695" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1765px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1769" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2065" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2135px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2139" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2435" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2505px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2509" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="2805" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 2875px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="2879" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="4.5" y="495" width="1000" height="1730" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="10" stroke-dasharray="30 30" pointer-events="all"/><rect x="82" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="505" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="82" y="1695" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1920px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="505" y="1924" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="82" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R0</font></b></font></div></div></div></foreignObject><text x="505" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R0</text></switch></g><rect x="82" y="1095" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R1</font></b></font></div></div></div></foreignObject><text x="505" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R1</text></switch></g><ellipse cx="504.5" cy="200" rx="292.5" ry="195" fill="#d5e8d4" stroke="#82b366" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="4425" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4540px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R0</font></b></font></div></div></div></foreignObject><text x="3015" y="4544" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R0</text></switch></g><rect x="2592" y="4055" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4170px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R1</font></b></font></div></div></div></foreignObject><text x="3015" y="4174" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R1</text></switch></g><rect x="2592" y="3685" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3800px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R2</font></b></font></div></div></div></foreignObject><text x="3015" y="3804" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R2</text></switch></g><rect x="2592" y="3315" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3430px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R3</font></b></font></div></div></div></foreignObject><text x="3015" y="3434" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R3</text></switch></g><rect x="2592" y="3175" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3245px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3249" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="3545" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3615px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3619" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="3915" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 3985px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="3989" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="4285" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 4355px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="4359" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1095" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">R9</font></b></font></div></div></div></foreignObject><text x="3015" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">R9</text></switch></g></g></svg>
\ No newline at end of file
diff --git a/src/chp4/stack_scaling_2.svg b/src/chp4/stack_scaling_2.svg
index 069b0ce..622ea32 100755
--- a/src/chp4/stack_scaling_2.svg
+++ b/src/chp4/stack_scaling_2.svg
@@ -1,4 +1,3 @@
 <?xml version="1.0" encoding="UTF-8"?>
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text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="505" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="82" y="1695" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1920px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="505" y="1924" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="82" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; 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text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 213px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"1"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="505" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 504.5 395 L 504.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 504.5 573.82 L 496.5 557.82 L 504.5 561.82 L 512.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><rect x="82" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="82" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 83px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="505" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1264.5" y="495" width="1000" height="1750" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="10" stroke-dasharray="30 30" pointer-events="all"/><rect x="1342" y="1095" width="845" height="230" fill="#d0cee2" stroke="#56517e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">square</font></b></font></div></div></div></foreignObject><text x="1765" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">square</text></switch></g><rect x="1342" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="1765" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="1342" y="1695" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1920px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="1765" y="1924" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="1342" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">I0</font></b></font></div></div></div></foreignObject><text x="1765" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">I0</text></switch></g><rect x="1342" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="1342" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 1343px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="1765" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2514.5" y="495" width="1000" height="1750" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="10" stroke-dasharray="30 30" pointer-events="all"/><rect x="2592" y="1095" width="845" height="230" fill="#d0cee2" stroke="#56517e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1210px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">square</font></b></font></div></div></div></foreignObject><text x="3015" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">square</text></switch></g><rect x="2592" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="3015" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="2592" y="1695" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1920px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="3015" y="1924" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="2592" y="1465" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1580px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">I0</font></b></font></div></div></div></foreignObject><text x="3015" y="1584" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">I0</text></switch></g><rect x="2592" y="585" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 655px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Address</font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="659" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="955" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1025px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1029" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g><rect x="2592" y="1325" width="845" height="140" fill="#b1ddf0" stroke="#10739e" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject style="overflow: visible; text-align: left;" pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1395px; margin-left: 2593px;"><div style="box-sizing: border-box; font-size: 0px; text-align: center;" data-drawio-colors="color: rgb(0, 0, 0); "><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-style: italic; white-space: normal; overflow-wrap: normal;"><div><b><font style="font-size: 50px;"><br /></font></b></div><div><b><font style="font-size: 50px;">Return Addres<span>s</span></font></b></div><div><b><font style="font-size: 50px;"><br /></font></b></div></div></div></div></foreignObject><text x="3015" y="1399" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle" font-style="italic">Return Address...</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="3520px" height="1890px" viewBox="-0.5 -0.5 3520 1890"><defs/><g><ellipse cx="1764.5" cy="200" rx="292.5" ry="195" fill="#d5e8d4" stroke="#82b366" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 1473px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"2"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="1765" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 1764.5 395 L 1764.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 1764.5 573.82 L 1756.5 557.82 L 1764.5 561.82 L 1772.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><ellipse cx="3014.5" cy="200" rx="292.5" ry="195" fill="#d5e8d4" stroke="#82b366" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 583px; height: 1px; padding-top: 200px; margin-left: 2723px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div style="font-size: 100px;"><b><font style="font-size: 100px;">Input:</font></b></div><div style="font-size: 100px;"><b><font style="font-size: 100px;">"3"<font style="font-size: 100px;"><br /></font></font></b></div></div></div></div></foreignObject><text x="3015" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Input:...</text></switch></g><path d="M 3014.5 395 L 3014.5 561.82" fill="none" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 3014.5 573.82 L 3006.5 557.82 L 3014.5 561.82 L 3022.5 557.82 Z" fill="#666666" stroke="#666666" stroke-width="10" stroke-miterlimit="10" pointer-events="all"/><rect x="4.5" y="495" width="1000" height="1380" rx="150" ry="150" fill="none" stroke="#999999" stroke-width="10" stroke-dasharray="30 30" pointer-events="all"/><rect x="82" y="725" width="845" height="230" fill="#fad9d5" stroke="#ae4132" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 840px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><font size="1"><b><font style="font-size: 100px;">main</font></b></font></div></div></div></foreignObject><text x="505" y="844" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">main</text></switch></g><rect x="82" y="1325" width="845" height="450" fill="none" stroke="#666666" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1550px; margin-left: 83px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="505" y="1554" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="82" y="1095" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 843px; height: 1px; padding-top: 1550px; margin-left: 2593px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">(Unused </font></b></i></font></div><div><font color="#666666" style="font-size: 100px;"><i><b><font style="font-size: 100px;">Stack Space)</font></b></i></font></div></div></div></div></foreignObject><text x="3015" y="1554" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">(Unused...</text></switch></g><rect x="2592" y="1095" width="845" height="230" fill="#fad7ac" stroke="#b46504" stroke-width="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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diff --git a/src/chp4/static_strings.svg b/src/chp4/static_strings.svg
index cd3c9d6..64c7247 100755
--- a/src/chp4/static_strings.svg
+++ b/src/chp4/static_strings.svg
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