...This makes it easier to write long programs: instead of constantly scrolling up and down between subroutines, you just double-click on the one you want to edit - more like we used to work in QuickBasic. Debugging, on the other hand, becomes a little more tricky than in the official IDE.
Yabadabbadoo suggests that you reserve workspace 4 for its own use and for best results demands a minimum resolution of 1024 x 768 on that workspace.
Source code is included. In Yabadabbadoo format, of course.