Diagram editor

A process diagram you can edit with a pointer or the keyboard. Drag a shape to move it, drag the background to pan and use the wheel to zoom. With the canvas focused: ] and [ select the next or previous shape, arrow keys move it (Shift moves 10 pixels), Delete removes it, plus, minus and 0 zoom, Escape clears the selection. The toolbar buttons do the same, and the list under the canvas describes every shape.