Where's the doc. on perl command-line options?

From: John Doe (workingstiff19_at_hotmail.com)
Date: 08/31/04 

Date: 31 Aug 2004 00:14:25 -0700

For example, I need to know what "perl -an" does. It's not in the
"man perl" page. Could not find it at perl.org or Perlmonks.
Google-searched comp.lang.perl.* for things like "command line
switches," "command line arguments," and "command line options," only
to find info on argument processing. [SARCASM] I admit that anyone
with half a brain should be able to divine which of the 90 (count 'em,
ninety) core documentation modules has what I seek: [/SARCASM]
perl
perltoc
perlreftut
perldsc
perllol
perlrequick
perlretut
perlboot
perltoot
   ...etcetera, but maybe one of you gurus can clue me in. :-)

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