QUIT

##
QUIT

            [SIC\]QUIT [ALL]

        When  typed  after a pause, QUIT aborts the execution of the interrupted
        level. QUIT returns an error to the previous level to signal this anoma-
        lous  end.  The  previous level is then also interrupted to allow a com-
        plete error recovery. Note that this behaviour depends on  the  ON ERROR
        command. QUIT can also be used to abort FOR-NEXT loop compilation.

        If  argument  ALL is present, all nested procedures are aborted, and SIC
        goes back to base level.

        In interactive sessions, QUIT should be used instead of BREAK and RETURN
        because it allows extra decision at run time. QUIT used as the error re-
        covery command is equivalent to RETURN ERROR.