.HEADER_LEVEL

   The .HEADER LEVEL command allows you to specify both a section
   number and a section title. Successive .HEADER LEVEL commands
   of the same value (all .HEADER LEVEL 1's for example) cause the
   section numbers to increase sequentially. This happens at all six
   levels of headers. If your current section is in Chapter 2 and is
   numbered 2.5.2.4 (a header level 3), then the following numbering
   would result depending upon the .HEADER LEVEL command you used:

   o  .HL4 would number the next section 2.5.2.4.1

   o  .HL3 (or .HL without a value, since .HL defaults to the
      current level) would number the next section 2.5.2.5

   o  .HL2 would number the next section 2.5.3

   o  .HL1 would number the next section 2.6

   (See also .DISPLAY LEVELS, .NUMBER LEVEL, .SET LEVEL, and .STYLE
   HEADERS.)

   Following is a summary of default header level numbering for
   three levels of three different types of documents:
   Default Header Level Numbering

                      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

     .HEADER LEVEL  [[+/-]n] [title]

   Abreviated format

     .HL  [[+/-]n] [title]
 

Additional information available:

Parameters      Default