[groff] 07/28: tbl(1): Identify `u` and `z` modifier provenance.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 9bf547181d5c667941ff4a3e84959fdda3ad09bb
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat Mar 2 20:27:42 2024 -0600

    tbl(1): Identify `u` and `z` modifier provenance.
    
    They are documented as tbl features by Gehani 1986 (covering DWB 1.0
    [1984]) and the tbl paper (Cherry, Lesk 1989) in Volume 2 of the
    Research Tenth Edition Manual.
---
 src/preproc/tbl/tbl.1.man | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/preproc/tbl/tbl.1.man b/src/preproc/tbl/tbl.1.man
index 51a1d5996..92bb5b137 100644
--- a/src/preproc/tbl/tbl.1.man
+++ b/src/preproc/tbl/tbl.1.man
@@ -906,7 +906,8 @@ of its range.
 Move the column up one half-line,
 \[lq]staggering\[rq] the rows.
 .
-This is a Research Tenth Edition Unix extension.
+This is a Documenter's Workbench (DWB) 1.0 and Research Tenth Edition
+Unix extension.
 .
 .
 .TP
@@ -984,6 +985,9 @@ calculation purposes;
 that is,
 compute the column's width using only the information in its descriptor.
 .
+This is a Documenter's Workbench (DWB) 1.0 and Research Tenth Edition
+Unix extension.
+.
 .
 .TP
 .I n