Description of the ps utility in FreeBSD (incomplete man page)?

Question

FreeBSD

Good afternoon!
What is:
uname -a
8.2-RELEASE FreeBSD 8.2-RELEASE
When you run ps -a and ps -A, the output is different.
man ps gives a description of the command and options, but the -A option is missing
Do I have old man pages?

Answer 1

This gave out on OS X:

-A    Display information about other users' processes, including those without controlling terminals.

-a    Display information about other users' processes as well as your own.  This will skip any processes which do not have a controlling terminal, unless the -x option is also specified.

Answer 2

ps -a gives exactly the same as just ps

Answer 3

The question is more philosophical than technical, why is there no description of the key and who is to blame and what should be done to make it appear?