Update man(1) to explain how to use the section numbers.
Update man(1) to explain how to use the section numbers.

PR:		docs/15557
Submitted by:	John Meshkoff <johnpipe@nwserv.com>
Reviewed by:	sheldonh

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase