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U
(command)
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U
(command)
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It reverses the most recent operation
Main
toolbar: 
Hot
key: CTRL+Z
Command
line: U
It is possible to enter U as many times as required, backing one step at a time, until the drawing is restored to its original state, at the beginning of the current editing session.
Operations which are external to the current drawing, such as printing or writing to a file, cannot be undone.
To undo a procedure it is possible to press CTRL + Zas well.
