Alan Freedman -- The Computer Language Company - Computer Desktop Encyclopedia
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redo

To reverse an undo operation. See undo.



undo

To restore the last editing operation that has taken place. For example, if a segment of text has been deleted or changed, performing an undo will restore the original text. Programs may have several levels of undo, including being able to reconstruct the original data for all edits performed in the current session. See redo and undo send.



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redistributableReed's law
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