1.DBG> EXPAND/RIGHT:6

      This command moves the right border of the current scrolling
      display to the right by 6 columns.

    2.DBG> EXPAND/UP/RIGHT:-12 OUT2

      This command moves the top border of display OUT2 up by 1 line,
      and the right border to the left by 12 columns.

    3.DBG> EXPAND/DOWN:99 SRC

      This command moves the bottom border of display SRC down to the
      bottom edge of the screen.