[groff] 03/36: groff_mm(7): Fix content and style nits.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 117abe4b73a1a0ba22204dcb3e1da4f6906f8601
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sun Jan 15 00:48:15 2023 -0600

    groff_mm(7): Fix content and style nits.
    
    * Prepare user for a more economical discussion of Boolean-valued
      registers and their defaults.
    * Use complete sentences.
---
 contrib/mm/groff_mm.7.man | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/contrib/mm/groff_mm.7.man b/contrib/mm/groff_mm.7.man
index 930162d12..044b2b434 100644
--- a/contrib/mm/groff_mm.7.man
+++ b/contrib/mm/groff_mm.7.man
@@ -3950,23 +3950,42 @@ Default is\~1.
 .SH Registers
 .\" ====================================================================
 .
+Default register values,
+where meaningful,
+are shown in parentheses.
+.
+Many are also marked as Boolean-valued,
+meaning that they are considered \[lq]true\[rq]
+(on,
+enabled)
+when they have a positive value,
+and \[lq]false\[rq]
+(on,
+disabled)
+otherwise.
+.
+.
 .TP
 .B .mgm
-Always\~1.
+indicates that
+.I groff mm
+is in use
+(Boolean-valued;
+.BR 1 ).
 .
 .
 .TP
 .B :p
-auto-incrementing footnote counter;
+is an auto-incrementing footnote counter;
 see macro
-.B FS
+.BR FS .
 .
 .
 .TP
 .B :R
-auto-incrementing reference counter;
+is an auto-incrementing reference counter;
 see macro
-.B RS
+.BR RS .
 .
 .
 .TP