1.  Care and Feeding of Department Heads

      Alternatively,
.SH
Care and Feeding of Directors
will print the heading with no number added:

Care and Feeding of Directors

      Every section heading, of either type, should be followed by a paragraph beginning with .PP or .LP, indicating the end of the heading. Headings may contain more than one line of text.

      The .NH command also supports more complex numbering schemes. If a numerical argument is given, it is taken to be a ``level'' number and an appropriate sub-section number is generated. Larger level numbers indicate deeper sub-sections, as in this example:
.NH
Erie-Lackawanna
.NH 2
Morris and Essex Division
.NH 3
Gladstone Branch
.NH 3
Montclair Branch
.NH 2
Boonton Line
generates: