PWB1/usr/news/conversionaids

There are two conversion aids, one for going from Version 3 to
Version 4 of SCCS, and the other from the old to the new version of TBL.
They live in /usr/bin.
They are undocumented, but mentioned, along with some
other useful information, in file /usr/news/pibs,
which can be conveniently printed by saying "cat /usr/news/pibs".
Of course, some of the information in that file is only
applicable to the BTL BISP site.
If you have never used old TBL nor SCCS Version 3, forget the whole thing.