Question

write a note undo and redo function​

Answer 1

Answer:

undo:

Undo is a command in many computer programs. It erases the last change done to the document reverting it to an older state. ... In all Macintosh applications, the Undo command is activated by pressing Command-Z. The common command for Redo on Microsoft Windows systems is Ctrl+Y or Ctrl+Shift+Z

redo:

Redo is a function performed on a computer that does any undo function again. For example, if you deleted text and perform an undo, then decide that you wanted that text deleted again, you could do a redo.

Answer 2

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