User manual

The undo command
"Undo
" cancels the effects of the last operation. To undo an
operation:

Click Undo on the Standard control bar.

Or choose "Edit -> Undo" (the exact wording tells you what the next undo step is, i.e. undo
scale).

Or press "Ctrl + Z".

Or press the comma key (in any tool except the Text Tool).
You can repeat the undo command to step back through the sequence of previous operations.
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