[groff] 02/02: groff_mdoc(7): Re-doc reservation of some names.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit dcdd323bb7ec31ea044674c0a5da50406602276b
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat May 15 14:40:37 2021 +1000

    groff_mdoc(7): Re-doc reservation of some names.
---
 tmac/groff_mdoc.7.man | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/tmac/groff_mdoc.7.man b/tmac/groff_mdoc.7.man
index 89e797d..f090135 100644
--- a/tmac/groff_mdoc.7.man
+++ b/tmac/groff_mdoc.7.man
@@ -4788,6 +4788,29 @@ register
 .Dl groff \-Tutf8 -rHY=0 \-mdoc foo.man | less
 .
 .
+.Pp
+The
+.Ql AD
+and
+.Ql HF
+strings,
+and
+.\" XXX: FT and IN have to be protected with ampersands because when
+.\" rendering via andoc and having already seen a man(7) page, .Ql
+.\" mis-handles them.  Why this is not true of AD, cR, D, HF, HY, P, SN,
+.\" or X is a mystery.
+.Ql \&FT ,
+.Ql \&IN ,
+.Ql P ,
+.Ql SN ,
+and
+.Ql X
+registers,
+are reserved for potential future compatibility with
+.Xr groff_man @MAN7EXT@
+page rendering options.
+.
+.
 .Sh Files
 .
 .Bl -tag -width mdoc/doc-ditroff -compact