gbranden pushed a commit to branch master
in repository groff.

commit 908a71d226532f44c8f44e0f7dd19c0732f5c103
Author: G. Branden Robinson <g.branden.robin...@gmail.com>
AuthorDate: Tue Feb 9 19:40:18 2021 +1100

    doc/ms.ms, groff_ms(7): Tweak DD, MINGW stuff.
    
    Explain meanings of DD and MINGW registers in prose sentences of the
    body text rather than trying to cram them into table cells.
---
 doc/ms.ms           | 15 +++++++++++++++
 tmac/groff_ms.7.man | 19 +++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/doc/ms.ms b/doc/ms.ms
index 822352a..edcb944 100644
--- a/doc/ms.ms
+++ b/doc/ms.ms
@@ -372,6 +372,21 @@ arrangements,
 but on the next page in multiple-column contexts.
 .
 .
+.LP
+The
+.CW \[rs]n[DD]
+distance used before and after each pair of display macros is also
+applied to regions of the document preprocessed with
+.I eqn (1),
+.I pic (1),
+and
+.I tbl (1).
+.
+The \[lq]gutter\[rq] affected by
+.CW \[rs]n[MINGW]
+is the gap between columns in multiple-column page arrangements.
+.
+.
 .\" ------------------------
 .bp
 .NH 1
diff --git a/tmac/groff_ms.7.man b/tmac/groff_ms.7.man
index ad9e554..ce22122 100644
--- a/tmac/groff_ms.7.man
+++ b/tmac/groff_ms.7.man
@@ -281,13 +281,28 @@ cb   cb cb cb
 lfCR lx  l  lfCR.
 Register       Definition      Effective       Default
 _
-DD     Display, table, eqn, pic spacing        next para.      0.5v
-MINGW  Minimum width between columns   next page       2n
+DD     Display distance (spacing)      next paragraph  0.5v
+MINGW  Minimum gutter width    next page       2n
 _
 .TE
 .RE
 .
 .
+.LP
+The
+.B \[rs]n[DD]
+distance used before and after each pair of display macros is also
+applied to regions of the document preprocessed with
+.IR \%@g@eqn (@MAN1EXT@),
+.IR \%@g@pic (@MAN1EXT@),
+and
+.IR \%@g@tbl (@MAN1EXT@).
+.
+The \[lq]gutter\[rq] affected by
+.B \[rs]n[MINGW]
+is the gap between columns in multiple-column page arrangements.
+.
+.
 .\" ====================================================================
 .SS "Cover page macros"
 .\" ====================================================================

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