[groff] 09/13: doc/groff.texi: Fix historical characterization.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 4d4ef7413954a920638884ec1935effe5e38fde9
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Fri Dec 4 14:04:25 2020 +1100

    doc/groff.texi: Fix historical characterization.
    
    As far as I can tell from available documents, CSTR #97 (last revised
    1982) came first, and CSTR #54 was revised later (the only two versions
    of the latter in circulation appear to be from 1976 and 1992).
---
 doc/groff.texi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/doc/groff.texi b/doc/groff.texi
index dab2d2a..f2ae1f3 100644
--- a/doc/groff.texi
+++ b/doc/groff.texi
@@ -17281,11 +17281,11 @@ Due to the obsolete jump-and-write command, the text 
clusters in the
 @subsection Output Language Compatibility
 
 The intermediate output language of @acronym{AT&T} @code{troff} was
-first documented in the Unix troff manual, with later additions
-documented in @cite{A Typesetter-independent TROFF}, written by Brian
-Kernighan.
+first documented in @cite{A Typesetter-independent TROFF}, by Brian
+Kernighan, and by 1992 the @acronym{AT&T} @code{troff} manual was
+updated to incorprate a description of it.
 
-The @code{gtroff} intermediate output format is compatible with this
+The GNU @code{troff} intermediate output format is compatible with this
 specification except for the following features.
 
 @itemize @bullet