[groff] 17/23: groff_mm(7): Document further DWB/groff mm diffs.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 01d4d6f42d9f42042eec69ca230113302861f1fb
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Fri Jul 29 01:05:43 2022 -0500

    groff_mm(7): Document further DWB/groff mm diffs.
    
    * contrib/mm/groff_mm.7.man: Document further differences between DWB mm
      and groff mm, including several unimplemented features.
---
 contrib/mm/ChangeLog      |  5 ++++
 contrib/mm/groff_mm.7.man | 60 +++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 60 insertions(+), 5 deletions(-)

diff --git a/contrib/mm/ChangeLog b/contrib/mm/ChangeLog
index 4bcb9b7e6..47a97cf36 100644
--- a/contrib/mm/ChangeLog
+++ b/contrib/mm/ChangeLog
@@ -1,3 +1,8 @@
+2022-07-29  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+       * groff_mm.7.man: Document further differences between DWB mm
+       and groff mm, including several unimplemented features.
+
 2022-07-29  G. Branden Robinson <g.branden.robinson@gmail.com>
 
        * m.tmac: Remove pointless conditionals in initialization.
diff --git a/contrib/mm/groff_mm.7.man b/contrib/mm/groff_mm.7.man
index 99a2fef22..34b8f2c93 100644
--- a/contrib/mm/groff_mm.7.man
+++ b/contrib/mm/groff_mm.7.man
@@ -72,16 +72,66 @@ implementation found in the AT&T Documenter's Workbench 
(DWB),
 with the following limitations.
 .
 .
-.IP \[bu]
+.IP \[bu] 2n
 No Bell Labs localisms are implemented.
 .
-.
-.IP \[bu]
-The macros
+This includes the logo and company name strings,
+.B }Z
+and
+.BR ]S ,
+respectively;
+the encoded company site location addresses recognized as the third
+argument to the
+.B AU
+macro;
+the
+.B Pv
+(\[lq]private\[rq] heading)
+register;
+and the
+.B CS
+(cover sheet),
 .B OK
+(other keywords),
 and
 .B PM
-are not implemented.
+(proprietary markings)
+macros.
+.
+.
+.IP \[bu]
+The
+.I grap
+preprocessor is not explicitly supported;
+no
+.B G1
+and
+.B G2
+macros
+are defined.
+.
+.
+.IP \[bu]
+The service mark string
+.B Sm
+is not implemented.
+.
+.
+.IP \[bu]
+The registers
+.BR A ,
+.BR C ,
+.BR E ,
+.BR T ,
+and
+.BR U ,
+typically set from the
+.I troff \" generic
+or
+.I nroff \" generic
+command lines with DWB
+.IR mm ,
+are not recognized.
 .
 .
 .IP \[bu]