Moving the duplicate moves it by multiples of the grid spacing, not aligning to grid. It is right up till a point and then draws the enlargement in one coordinate direction. It does what it should, but not what is seen. Changing the color modifies the line style, too. Inserting a point into a polyline doesn't work correctly.
Raster images consume a lot of memory with large zoom factors.
KIllustrator backend for pstoedit. A textbox tool should be addded. Or, if one double clicks on a box, a marker comes up so that text can be added in its interior. It would be nice if text could be added to lines, i.e. if I double click on a line, then I can enter some text in a text box. You can 'duplicate' an object, by default it appears down and to the right of the orignal, and the duplicated object is selected.