a big +1 for me!

when editing the manpages i thought that there must have been a way to
split those long .It Cm lines.  Xo/Xc blocks seems to be used in quite
a few places in base too, so I guess it's fine.  (grep show it's used
in pages lik awk, ftp, ksh, less, make, patch, pkg_*, sndiod, vmctl,
etc...)