EditUndo

Case No.	Inputs	Expected Outputs	Remarks	Result
1	Edit -> Undo 12 Rectangles successively put on the screen. Undo until there are none. (Drawing components only)	Selected components are Removed from screen.	Remove all, drawing components.	Pass. ?? Finite undo limit?
2	Edit -> Undo 12 Buttons successively put on the screen. Undo until there are none. (Components only)	Selected components are Removed from screen.	Remove all, Components.	No response.
2	Edit -> Undo Undo half, and redo until There’s the original number again	12 rectangles, Redo grayed out.	Interleave	Pass.
3	Edit -> Undo Undo half. Make 6 triangles. Undo till all gone.	Empty screen	Interleave	Only one layer of undo. Redo still passes.
4	Edit -> Undo Make 1 rectangle Make 1 button. Make 1 polygon Make 1 checkbox.		Interleave Drawing components first.	Removed the polygon, but failed after that. One level of Redo.
5	Edit -> Undo Make 1 button. Make 1 rectangle Make 1 checkbox. Make 1 polygon		Interleave Components first.	Removed the polygon, but failed after that. One level of Redo.
6	Edit -> Undo Any ‘Align’ operation.	‘Un Align’ everything.		No Undo response.