sync to OpenBSD:

note that IMPLEMENTATION NOTES is not used in OpenBSD
add missing comma in "sections 1, 6, & 8 only" below EXIT STATUS
below SEE ALSO, add an .Xr to man(1), and from man(7) to mdoc(7)

2 files changed, 8 insertions, 3 deletions

diff --git a/man.7 b/man.7
index 2edc0cbb..01b2d27a 100644
--- a/man.7
+++ b/man.7
@@ -227,13 +227,14 @@ Documents are generally structured as follows:
 \&.SH DESCRIPTION
 The \efBfoo\efR utility processes files...
 \&.\e\*q .SH IMPLEMENTATION NOTES
+\&.\e\*q Not used in OpenBSD.
 \&.\e\*q .SH RETURN VALUES
 \&.\e\*q For sections 2, 3, & 9 only.
 \&.\e\*q .SH ENVIRONMENT
 \&.\e\*q For sections 1, 6, 7, & 8 only.
 \&.\e\*q .SH FILES
 \&.\e\*q .SH EXIT STATUS
-\&.\e\*q For sections 1, 6 & 8 only.
+\&.\e\*q For sections 1, 6, & 8 only.
 \&.\e\*q .SH EXAMPLES
 \&.\e\*q .SH DIAGNOSTICS
 \&.\e\*q For sections 1, 4, 6, 7, & 8 only.
@@ -961,8 +962,10 @@ macro does not accept negative values in mandoc.
 In GNU troff, this would result in strange behaviour.
 .El
 .Sh SEE ALSO
+.Xr man 1 ,
 .Xr mandoc 1 ,
-.Xr mandoc_char 7
+.Xr mandoc_char 7 ,
+.Xr mdoc 7
 .Sh HISTORY
 The
 .Nm
diff --git a/mdoc.7 b/mdoc.7
index 8d402ccb..a7a39714 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -343,13 +343,14 @@ The
 \&.Nm
 utility processes files ...
 \&.\e\*q .Sh IMPLEMENTATION NOTES
+\&.\e\*q Not used in OpenBSD.
 \&.\e\*q .Sh RETURN VALUES
 \&.\e\*q For sections 2, 3, & 9 only.
 \&.\e\*q .Sh ENVIRONMENT
 \&.\e\*q For sections 1, 6, 7, & 8 only.
 \&.\e\*q .Sh FILES
 \&.\e\*q .Sh EXIT STATUS
-\&.\e\*q For sections 1, 6 & 8 only.
+\&.\e\*q For sections 1, 6, & 8 only.
 \&.\e\*q .Sh EXAMPLES
 \&.\e\*q .Sh DIAGNOSTICS
 \&.\e\*q For sections 1, 4, 6, 7, & 8 only.
@@ -2868,6 +2869,7 @@ standalone double-quote in formatted output.
 This is not supported by mandoc.
 .El
 .Sh SEE ALSO
+.Xr man 1 ,
 .Xr mandoc 1 ,
 .Xr mandoc_char 7
 .Sh HISTORY