Off-topic: Conventions for FreeBSD manual pages

On Wed, 20 Apr 2022 09:36:02 +0100, Steve O'Hara-Smith wrote:
>On Wed, 20 Apr 2022 10:26:40 +0200
>Ralf Mardorf <ralf-mardorf@riseup.net> wrote:
>
>> The OP is missing a description of a man page's structure as given by
>> the Linux "man man-pages". However, the manual sections are provided
>> by FreeBSD's "man man", too.  
>
>	Linux (at least Mate) also has man man, interestingly with a
>history section indicating it was written in 1990. I'm pretty sure the
>XENIX systems I used in the mid 1980s also had man man - until the
>manpages were printed and removed to make space for applications,
>discs were small in those days.

[rocketmouse@archlinux ~]$ man man | grep HISTORY -A10
HISTORY
       1990, 1991 – Originally written by John W. Eaton (jwe@che.utexas.edu).

       Dec 23 1992: Rik Faith (faith@cs.unc.edu) applied bug fixes supplied by Willem Kasdorp (wkasdo@nikhefk.nikef.nl).

       30th April 1994 – 23rd February 2000: Wilf. (G.Wilford@ee.surrey.ac.uk) has been developing and maintaining this package with the help of a few dedicated people.

       30th October 1996 – 30th March 2001: Fabrizio Polacco <fpolacco@debian.org> maintained and enhanced this package for the Debian project, with the help of all the community.

       31st March 2001 – present day: Colin Watson <cjwatson@debian.org> is now developing and maintaining man-db.

Apropos Colin Watson and Debian -> Ubuntu -> Mate vs other Linux
related to _manual sections"_:

In 2015...

  Begin forwarded message:

  Date: Sun, 27 Sep 2015 21:23:37 +0100
  From: Colin Watson <cjwatson@ubuntu.com>
  To: ubuntu-users@lists.ubuntu.com
  Subject: Re: renaming files

  On Sun, Sep 27, 2015 at 09:58:02PM +0200, silver.bullet@zoho.com
  wrote:
  > Another useful command could be
  > 
  > [rocketmouse@archlinux ~]$ man rename | grep EXAMPLES -A10  

  It is worth noting that Ubuntu ships a different version of rename
  from that shipped by Arch.  It's still definitely a useful
  programmable tool for this kind of job, but in this case it's more
  important than usual to consult Ubuntu's documentation when advising
  Ubuntu users.

...today

[root@archlinux rocketmouse]# lsb_release -d; man rename | tail -1
Description:	Arch Linux
util-linux 2.38                2022-02-17                RENAME(1)
[root@archlinux rocketmouse]# systemd-nspawn -qD /mnt/moonstudio lsb_release -d; systemd-nspawn -qD /mnt/moonstudio -P man rename | tail -1
Description:	Ubuntu 16.04.7 LTS
perl v5.20.2                   2015-06-05                RENAME(1p)

I didn't know that a section "1" and a section "1p" does exist.