I never thought I would say this but after having attempted some screen editing with the built in screen editor for Mach4, I actually prefer the Screen4 editor (with all its warts) that I used for Mach3. I expected a learning curve but certain "features" like the paste function in Mach4 are making me crazy, and the RMB basically does zip in the Mach4 editor. I need the extra performance of 4 so I guess I'll have to get used to a whole new set of warts...