[groff] 12/14: groff_mm(7): Document `Tb` register.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 2c6c72c9a4114cd87b9c99a3246842bba855c60b
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Thu Jan 19 13:53:28 2023 -0600

    groff_mm(7): Document `Tb` register.
---
 contrib/mm/groff_mm.7.man | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/contrib/mm/groff_mm.7.man b/contrib/mm/groff_mm.7.man
index 6063fc866..0205a524b 100644
--- a/contrib/mm/groff_mm.7.man
+++ b/contrib/mm/groff_mm.7.man
@@ -4743,6 +4743,13 @@ Default is\~5.
 .
 .
 .TP
+.B Tb
+is an auto-incrementing table counter;
+see
+.BR TB .
+.
+.
+.TP
 .B V
 defines the vertical spacing for the document,
 and must be set from the command line.