troff in 4.1?

[Arthur David Olson]

> > Can [nt]roff use 8-bit charactercodes now when Sunos is (almost) SYSV?

> No, unfortunately.  Nroff and troff are listed as being 8-bit dirty (SunOS
> 4.1 Release Manual, table 7-4).  They still strip the top bit on input.

And the nroff manual contains this entertaining passage under the "NOTES" head:
	nroff is not 8-bit clean because making nroff 8-bit clean would
	require rewriting the nroff internals and filters.
Seeing as nroff would already be 8-bit clean if such rewriting were not
required, the above translates into English thusly:
	nroff is not 8-bit clean because nroff is not 8-bit clean.