I don't know how many of you got tired of seeing small lines that doesn't serve any purpose other than taking up filesize... I got something quick and half-dirty to work and below is a really simple macro that allow you to select lines that fit inside a 0.9x0.9 "select box". IsoDraw macros do seem to have limits, but it's also very easy to play with! Well, since it's a macro, it's slow, but it cleans up the drawing... I bet you can improve the code, why not get started to share other simple codes that helps all of us to get better/cleaner/faster iso (?) files. ------------------------------ Macro Select short lines 09 define x as integer define y as integer For x = 0 to 3500 step 1 For y = 0 to 250 step 1 SELECT RECTANGLE (x/10) (y) ((x/10) + 0.9) (y + 0.9) add direct end for end for end Macro ------------------------------ The file can be made in notepad and saved with a ".ism" extension in your macro directory (under your own \\documents and settings\application data\ptc\isodraw\macros\) Cheers Lars