Description:
- Reverses the most recent edit action.
- Execute this command several times to undo results of subsequent edit commands.
- Starting (playing) simulation empties the Undo/Redo list. It is not possible to undo/redo any edit operation after a simulation starts.
- CTRL+Z is the keystroke shortcut for this command.
Constraints:
- There is an action to undo.
- No simulation is running.