I was digging through some old CD's that I had archived some time ago and ran across some old newsgroup articles (from news://discussion.autodesk.com/autodesk.autocad.customization ) that I had saved.
I think this is still some good info - here are the links...bit codes
Create a Layer List and thier current state to a file
How to determine if a point is on a polyline
need a xdata removal program
Posted 7/06/2006 06:37:00 PM