🚀 go-pugleaf

>Can anyone offer any information about conversion aids to move a
>document from nroff to Interleaf?

Interleaf provides a facility for converting nroff/troff documents
to Interleaf documents. It takes the *output* from nroff and does
it's best to extract stylistic information. Check your documentation
and/or call your account representative.

(The "-d nroff" option to the opsfilt program was documented and QAed
about one release later than the code was shipped, so you may have it
even if you have an older release. I can't remember the exact version
numbers involved.)

There is also a set of filters to handle documents with EQN equations
if you have the Interleaf math option.

A filter to take arbitrary nroff/troff source and convert to Interleaf 
(or anything else) is difficult because n/troff is pretty close to a 
programming language. You have to make all the registers and conditionals
and macros and ... work just like n/troff, and even duplicate the bugs
that people rely on. I don't know of anyone that has done this.

It would be very easy, almost trivial, I think, to write filters for 
the various macro packages such as ms, me or mm, or at least for large
subsets. The problem is that I have never seen a site that enforces
pure usage of the macro packages. At any point someone can fall into
arbitrarily complex nroff codes.

The above two paragraphs apply to TeX too. I wish that Knuth had added
an optional layer of protection to TeX so that macro package writers 
could choose to disable more primitive layers of macros.
-- 
	...!harvard!umb!ileaf!md	Mark Dionne, Interleaf
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