AAA commands on PIX

Hello all,
I am referring to the PIX 6.3 command reference guide for the command "aaa authentication". As per this document, there is no option like 'inbound' or 'outbound' in this command. But the examples under these command show these keywords. I am getting confused here.
Can anyone show me a place where AAA commands on PIX are explained clearly. I know how these commands work on a router. But PIX is very difficult to understand.
Any help would be highly appreciated.
TIA,
Mohan

There is an inbound/outbound option in the aaa authentication command on the PIX. You could refer to the command reference at http://www.cisco.com/en/US/products/sw/secursw/ps2120/products_command_reference_chapter09186a0080104239.html#wp1025384

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