[groff] 14/14: groff_mdoc(7): Document Mt, Lk as GNU extensions.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 42f526a2baacc69f9ed02bcb44b84731756108d0
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sun Jan 28 18:10:54 2024 -0600

    groff_mdoc(7): Document Mt, Lk as GNU extensions.
    
    ...because they are.
    
    $ grep -Er '(Mt|Lk)' HISTORY/MDOC/1995-4.4BSD-Lite2/ || echo NOPE
    NOPE
---
 tmac/groff_mdoc.7.man | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tmac/groff_mdoc.7.man b/tmac/groff_mdoc.7.man
index ddfafcc38..adce8438a 100644
--- a/tmac/groff_mdoc.7.man
+++ b/tmac/groff_mdoc.7.man
@@ -4726,6 +4726,11 @@ It is neither callable nor parsed.
 .It Li .Lk
 Embed hyperlink.
 .
+This is a GNU extension introduced in
+.Em groff
+1.17
+(April 2001).
+.
 .
 .Pp
 .D1 Usage: Pf . Ic \&Lk Ar uri Op Ar link-text
@@ -4751,6 +4756,11 @@ Its default width is 6n.
 .It Li .Mt
 Embed email address.
 .
+This is a GNU extension introduced in
+.Em groff
+1.17
+(April 2001).
+.
 .
 .Pp
 .D1 Usage: Pf . Ic \&Mt Ar email-address