Thank you Michael. So much to learn :-)

Your response improved my understanding of the #include, and the unfinished script is responding properly now.

What did not work, when I wanted the #include to be operational, and generated the error, was:
/*
Miscellaneous comments
*/
#include "GetPoint.js"

What did work, with the desired #include operational, was:
#include "GetPoint.js"
/*
Miscellaneous comments
*/