HP 3000 Manuals

Learning HP EDIT

Undoing a Command 

You may have noticed earlier a key labeled "Undo" in the Edit Commands
function key set.  Return to the Edit Commands function key set now.
[REV BEG]

     Press F2,  Edit Commands[REV END]

The function key F5, Undo, corresponds to the command Undo Last Command.
Whenever this command is executed, HP EDIT reverses the effect of the
previous text-altering command.  Deleted text can be restored, new text
can be deleted, and so on.  This command has no effect on commands that
do not change the text, such as commands that position the cursor.
Practice this command by first deleting three lines.
[REV BEG]

     Type 3 [REV END]
[REV BEG]

     Press D[REV END]

Execute the command, Undo Last Command, by pressing F5 or pressing u, the
key assigned to Undo Last Command, to restore the three lines you just
deleted.
[REV BEG]

     Press F5,  Undo [REV END]

Since Undo Last Command is also a text-altering command, the undo itself
can be reversed.  Executing the command again deletes the three lines
again.
[REV BEG]

     Press F5,  Undo [REV END]

MPE/iX 5.0 Documentation