[docs]: Minimally document `tag`, `taga` requests.

* doc/groff.texi (Postprocessor Access):
* man/groff.7 (Request short reference): Do it.

Fixes <https://savannah.gnu.org/bugs/?62695>.

I don't know if we need to keep these.  They do much the same thing as
`device`, and are implemented nearly identically to each other.  They
have only one user, the also undocumented "devtag.tmac".

One difference is that the `device` request constructs a "macro"
(internally to GNU troff), and `tag{,a}` construct strings (from groff's
string class, not the C++ standard library's).

Possibly the type used for storage of the node contents is intended to
address some of the same problems we've seen crop up in issues like
Savannah #63074.

1 files changed, 9 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 3b9777e29..a53ac4174 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2023-04-14  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+	[docs]: Minimally document `tag`, `taga` requests.
+
+	* doc/groff.texi (Postprocessor Access):
+	* man/groff.7 (Request short reference): Do it.
+
+	Fixes <https://savannah.gnu.org/bugs/?62695>.
+
 2023-04-11  G. Branden Robinson <g.branden.robinson@gmail.com>
 
 	[docs]: Fix typos.