disp-name

    Specifies a display to be expanded or contracted. You may specify
    any of the following:

    o  A predefined display: SRC, OUT, PROMPT, PLOT

    o  A display previously created with the SET DISPLAY command

    o  A pseudo-display name: %CURDISP, %CURSCROLL, %NEXTDISP,
       %NEXTOUTPUT, %NEXTPLOT, %NEXTSCROLL, %NEXTSOURCE

    If you do not specify a display, the current scrolling display,
    as established by the SELECT/SCROLL command, is chosen.