sdh@rabbit.UUCP (S. Hawley) (03/23/84)
With a little experimenting, I've modified the line drawing routine used by Applesoft. Believe it or not, it is VERY relocatable, so I moved it to RAM and modified both the line draw and the plot routines to be exclusive-or instead of destroying background. This allows you to produce programs that use the 'rubber banding' effect that has become so popular in user-friendly software as of late. If there is call for it I will gladly post the modifications and instructions unfortunately, one must poke in the arguments and do a call, but with a little work, I may have so that it uses either the ampersand or the usr commands (probably ampersand). Steve Hawley <allegra,alice>!rabbit!sdh