tbl preprocessor for expanding .so files

[Guy Harris]

> >Correct if I'm wrong, but isn't [catso] just a weaker version of
> >soelim(1)?   I'm on 4.2 BSD, so, I don't know, maybe this filter
> >doesn't exist on other versions of Unix.  If it does, there's no
> >point in reinventing the wheel.  Soelim(1) can also handle
> >nesting of ".so" calls.
> 
> Sorry, but on our System V, we have no soelim!

Since Bellcore has 4.2 one at least one of one of their machines, just copy
the source over to your S5 machine and compile it.  It's a simple program
(written by the VP of R&D at Sun Microsystems) which should run on any V7 or
post-V7 version of UNIX.  (According to the comments at the front:

	This program eliminates .so's from a n/troff input stream.
	It can be used to prepare safe input for submission to the
	phototypesetter since the software supporting the operator
	doesn't let him do chdir.

	This is a kludge and the operator should be given the
	ability to do chdir.

	This program is more generally useful, it turns out, because
	the program tbl doesn't understand ".so" directives.
)

I don't know what the U of C's policy on redistributing their software is,
but I don't think "soelim" has any AT&T code in it so there's probably no
problem with AT&T.

	Guy Harris