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

1 - Parameter

 y

    One of the following one- or two-letter codes:

    Code  Form of Sequence and Case

    D     Decimal numbers
    O     Octal numbers
    H     Hexadecimal numbers
    RU    Roman uppercase numerals
    RL    Roman lowercase numerals
    RM    Roman mixed case numerals - only first numeral is uppercase
    LU    Letters, uppercase
    LL    Letters, lowercase
    LM    Letters, mixed case - only first letter is uppercase

2 - Default

    Decimal numbers (D)