*) grid *) multiple MetaPost pictures per file *) circle resizing *) font selection *) line labels on canvas *) more options for label placement (tangent slope, ...) *) create MetaPost preview on the fly *) undo/redo *) switch to export / not export object *) choose type of arrow (none, one, both) *) more items (ovals, rectangles, ...) *) export to other graph drawing packages (xfig, xypic, ...) *) clone function to duplicate items (for example, states with loops) ...