An example on how a script could look like can be found here inside the Examples folder.
A script can be executed by using the run command with the path to the script.
A line in a script is treated as comment if it starts with either #, this makes documenting your code really easy.
Currently it is only supported to comment out complete lines.
There is a special kind of script supported by JTerm, being the startup script. This script will be exectuted every time JTerm is started.
A startup script is a file with the name .jtermrc placed inside your home directory. Apart from that there is no difference to a normal script.
An example for a simple startup script is here.