Sometimes when you repeat an UNDO to reach a previous edit status, you might UNDO too much, especially if UNDO is mapped to a key that auto-repeats. REDO allows you to reapply changes, effectively undoing the UNDO.
The REDO command is a complement to UNDO and will successively reapply the changes undone by the UNDO command.
You can only REDO as many times as successive UNDO commands have been done. The maximum number of UNDO operations is set by the SETUNDO command, which has an upper limit of 25, and is set on a PROFILE basis.
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