I'd like to add a little thing: the main window should appear BEFORE the
diagrams to me (when specified in command line), like in The Gimp. This
way the window manager can place the "Diagram Editor" window where you
prefer it to be (up left for me), and then open diagrams elsewhere.
Or else the app could record the window positions and sizes, though not
many apps using this feature work well in my window manager
(most of the time, WindowMaker).
--
Pierre