FreeBSD's syslogd.8 man page was recently edited.  One rendered portion 
looks like this:

          The allowed_peer option may be any of the following:

          ipaddr[/masklen][:service]
          ipaddr[/prefixlen][:service]    Accept datagrams from ipaddr,
                                          ipaddr can be specified as an
                                          IPv4 address or as an IPv6
                                          address enclosed with ¡[¢ and


Ideally, the two options for IP address would render vertically aligned 
with the description, like this:

          ipaddr[/masklen][:service]      Accept datagrams from ipaddr,
          ipaddr[/prefixlen][:service]    ipaddr can be specified as an

Is that even possible?

The source for that section:

   The
   .Ar allowed_peer
   option may be any of the following:
   .Bl -tag -width "ipaddr[/prefixlen][:service]XX"
   .It Xo
   .Sm off
   .Ar ipaddr
   .Op / Ar masklen
   .Op \&: Ar service
   .Pp
   .Ar ipaddr
   .Op / Ar prefixlen
   .Op \&: Ar service
   .Sm on
   .Xc
   Accept datagrams from
   .Ar ipaddr ,
   .Ar ipaddr
   can be specified as an IPv4 address or as an IPv6

Full source at 
https://svnweb.freebsd.org/base/head/usr.sbin/syslogd/syslogd.8?view=co

Thanks!