diff --git a/doc/TODO b/doc/TODO
new file mode 100644
index 0000000..7a6279b
--- /dev/null
+++ b/doc/TODO
@@ -0,0 +1 @@
+Create a CMakeLists.txt here so that the files folder is automatically copied into html/ once doxygen is run.
diff --git a/doc/nDGridMap.pdf b/doc/files/nDGridMap.pdf
similarity index 100%
rename from doc/nDGridMap.pdf
rename to doc/files/nDGridMap.pdf
diff --git a/doc/markdown/main.md b/doc/markdown/main.md
index a197232..eed36df 100644
--- a/doc/markdown/main.md
+++ b/doc/markdown/main.md
@@ -5,4 +5,4 @@ This pages provide basic documentation about the Fast Marching code packages I h
 - [Software design](markdown/design.md)
 - [Detailed building](markdown/building.md)
 - [Benchmarking](markdown/benchmarking.md)
-- [nDGridMap implementation](../nDGridMap.pdf): Probably, the most complex part of the code. It encapsulates the complexity of the n-dimensional generalization, so that solvers are implemented almost independently of the number of dimensions.
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+- [nDGridMap implementation](files/nDGridMap.pdf): Probably, the most complex part of the code. It encapsulates the complexity of the n-dimensional generalization, so that solvers are implemented almost independently of the number of dimensions.
\ No newline at end of file