Programmer's WorkBench (pwb.hlp) (Table of Contents; Topic list)
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Undo Function
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     Undo («undo»)
          Reverses the last editing operation. The maximum number of
          times this can be performed for each file is set by the
          Undocount switch.
          See: Undocount
 
     Meta Undo («meta» «undo»)
          Performs the operation previously reversed with Undo. This
          action is often called "redo".
 
     Returns
 
     True:  Operation undone or redone.
     False: Nothing to undo or redo.
 
     See
 
     _pwbundo, _pwbredo, Repeat
     Edit menu, Undo
     Edit menu, Redo
     Edit menu, Repeat
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