Change the AutoCAD F1 key from Help to the CANCEL Command
10 October 2008
A great answer on this was posted on CADTutor.net at the link below. I would also encourage you to read Michael’s Corner by Michael Beall and get his monthly newsletter.
The short version of the solution is to use the AutoCAD CUI to edit the keyboard shortcuts. Edit the information for the F1 key to description “CANCEL” and macro ^C.
Cheers,
Shaan