@Snuffy
Quote:
zoom out and zoom in boundries get lost
Do you mean the (by default black) line/border around the shapes or the blue "selected object" highlight?
By default the black borders are 10 units (1mm) thick, which is reasonable on most levels of magnification here. Thinner borders don't really scale well when zoomed really far out as I have to draw at least 1 pixel. Nearly time to rewrite the drawing engine...
How much memory are you using? Is it related to zoom in/out or other operations as well?
Thanks for bringing up these points, Snuffy.