The .DISPLAY NUMBER command allows you to specify the form that
    sequential numbering (or lettering) of pages will take. This
    command does not change any values; it affects only the way the
    values are displayed. (See also .HEADERS ON, .NUMBER PAGE, .NO
    NUMBER, .LAYOUT, .NUMBER RUNNING, and .NO PAGING.)

    Format

      .DISPLAY NUMBER  y

    Abreviated format

      .DNM  y