In Base SAS windows,
this command executes the UNDO command. In
SAS/GRAPH windows, WUNDO
is invalid.
One execution of the
WUNDO command undoes text entry for only one line at a time. If you
issue the WUNDO command again, the previous line of text is undone.
If you use the CC command
to copy and paste a block of text, and then issue the WUNDO command,
the block of text that you copied is deleted. If you use the DD command
to delete a block of text, and then issue the WUNDO command, the block
of text that you deleted is restored.
Note: The WUNDO command cannot
replace lines that the SUBMIT command removes. It cannot reverse the
effects of submitted SAS statements.