VMS Help DSR, DSR Commands, .DISPLAY LEVELS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The .DISPLAY LEVELS command allows you to specify the form that
    sequential numbering (or lettering) of section headers will
    take. You can control the form of individual numbers within a
    section number for a header (that is, those numbers preceding
    or following a dot). This command does not change any values; it
    affects only the way the values are displayed.(See also .HEADER
    LEVEL, .NUMBER LEVEL, and .STYLE HEADERS.)

    Default Header Level Numbering

    Command            Nonchapter  Chapter n   Appendix A

    .HEADER LEVEL 1    1           n.1         A.1
    .HEADER LEVEL 2    1.1         n.1.1       A.1.1
    .HEADER LEVEL 3    1.1.1       n.1.1.1     A.1.1.1

    Format

      .DISPLAY LEVELS  [y1] [,y2]...[,y6]

    Abreviated format

      .DHL  [y1][,y2]...[,y6]

1 - Parameter

 y

    One of the following one- or two-letter codes; 1,2, ... 6
    indicate positions of numbers (or letters) for a section header.
    The commas correspond to the dots in a printed section number.
    (See also .NUMBER LEVEL.)

    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)

3 - Example

 Entering the command .DISPLAY LEVELS RU, LU, LL (roman numeral
 upper, letters uppercase, letters lowercase) would cause your
 headers to be displayed as follows:

      Command            Nonchapter   Chapter n  Appendix A

      .HEADER LEVEL 1    I            n.I        A.I
      .HEADER LEVEL 2    I.A          n.I.A      A.I.A
      .HEADER LEVEL 3    I.A.a        n.I.A.a    A.I.A.a