merge from OpenBSD:

- HISTORY is interesting even when there are STANDARDS
- more precise instructions what to put into AUTHORS
- add the version argument to the mdoc(7) .Os macro

1 files changed, 3 insertions, 5 deletions

diff --git a/mdoc.7 b/mdoc.7
index 4061c427..3a2dba87 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -560,11 +560,9 @@ section should be used instead.
 See
 .Sx \&St .
 .It Em HISTORY
-The history of any manual without a
-.Em STANDARDS
-section should be described in this section.
+A brief history of the subject, including where support first appeared.
 .It Em AUTHORS
-Credits to authors, if applicable, should appear in this section.
+Credits to the person or persons who wrote the code and/or documentation.
 Authors should generally be noted by both name and email address.
 .Pp
 See
@@ -2257,7 +2255,7 @@ any
 file.
 Its syntax is as follows:
 .Pp
-.D1 Pf \. Sx \&Os Op Cm system
+.D1 Pf \. Sx \&Os Op Cm system Op Cm version
 .Pp
 The optional
 .Cm system