Yes, the editor does support designations through the mouse, but it does not support building, switching designations, switching building, moving throughout z-levels, starting the save dialog, starting the load dialog, starting the export dialog etc, using only the mouse.
[x] provide designation switching capability using the mouse
[x] provide building interaction and placement using the mouse
[x] provide some variety of menu to interact with the mouse
[ ] generally make the interface mouse accessible.
Yes, the editor does support designations through the mouse, but it does not support building, switching designations, switching building, moving throughout z-levels, starting the save dialog, starting the load dialog, starting the export dialog etc, using only the mouse.