Pp is used to separate paragraphs, not to introduce them.  A Pp macro
call right after Sh is wrong, and it is ignored by the formatter, which
reports a warning about it.

Signed-off-by: Alejandro Colomar <alx@nginx.com>

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

The Authors section is meant to list the main authors.  However, the
section only contained the copyright notice, so the Copyright section
seems more appropriate.  While we change that, it makes sense to also
specify the license, and update the copyright year.

Reviewed-by: Liam Crilly <liam@nginx.com>
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

We've applied significant changes to the page, so let's update the date.
While we're at it, let's change it to use ISO 8601 format for the date.

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

Not setting it produces the default value of 'BSD' or 'GNU', depending
on the software formatting the manual page.  We're neither, so let's
specify our project name.  See groff_mdoc(7).  While mandoc_mdoc(7)
formally says that .Os is only for the operating system, and not for the
package name, that's an oversimplification, and only meant for software
inherent to the OS.  For portable software, mandoc(1)'s (and OpenBSD's)
maintainer Ingo Schwarze agreed that it is more sensible to specify the
project name (and optionally, the version).

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

There was a recent unanimous agreement by maintainers of groff, mandoc,
the Linux man-pages, and other relevant programmers, that manual pages
should not use uppercase unnecessarily.  Use of uppercase in the title
and in the section's titles dates from before one could use bold,
italics, and other such formatting, so that it was the way of giving
more importance to certain parts of a page.  Nowadays, we use bold, so
uppercase is unnecessary.

Moreover, using uppercase in the title is bad, since it removes
information.  If we keep the exact casing used in the program (or
function) name, we provide more information.  And anyway, if users want
to read in uppercase, they can program certain mdoc(7) or man(7) macros
to transform their arguments into uppercase.  This could be done via
</etc/groff/mdoc.local> and </etc/groff/man.local>.

There's a plan of transforming OpenBSD pages and the Linux man-pages to
stop using uppercase.  Other projects may join.  That will likely happen
in the following months.  Let's align with this.

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

This short option is not really supported.  Probably it was just a typo.

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>