Fix a bug that's survived since rev 1.1:
Fix a bug that's survived since rev 1.1:

Don't mark the word "file" up as a pathname in "/etc/group file".  For
the sake of consistency with rev 1.18, use Nm instead of "Pa /etc/group"
and break "file" onto the next line.

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