Sets the maximum number of commands you can undo
    for a specific buffer.

    Format

      SET MAX_UNDO   number

1  –  Qualifier

1.1    /BUFFER

       /BUFFER=buffer-name

    Indicates the buffer whose MAX_UNDO buffer limit is to be changed. The
    default is the current buffer.

2  –  Parameter

 number
    Specify the maximum number of commands you can undo in the "number".
    qualifier.  If you omit a value in the"number" qualifier, LSE displays
    a default maximum Undo number of [100].  Press Return to accept the
    default or specify a different value.