Define undo and redo command.Write functions of undo/redo command. Why do we need these commands?
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Answers
The undo key is Ctrl+Z and its function is to reverse anything which is last done by you. So any changes made in the last time will get erased. In case of the redo key, the function is to do any cation “n” number of times. ... Using these shortcuts you can perform any of these functions.
Explanation:
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Answer:
Undo erases the last change done to the document, reverting it to an older state. In some more advanced programs, such as graphic processing, undo will negate the last command done to the file being edited.
It's shortcut key is Ctrl+Z.
Redo function restores any actions that were previously undone using an undo. Some people may refer to this feature as a reverse undo. You can reverse more than one action that has been undone. You can use Redo command only after Undo command.
It's shortcut key is Ctrl+Y.
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