anyone know of a referance i can lookup to learn how to make a dialog box with lisp. the ultimate goal would be to create a reactor of some sort that displays the length of a line in a dialog box anytime a line/polyline is selected. now before you start basing me i know that i can get this information from the properties dialog box, or the LIST command, but i find that i can save time when i wanna know the length of somehting by just looking at that information instead of entering an additional command to find it. suggestions? [thinks to self: i hope i'm making myself clear ;{]