[squid-users] help on always_redirect

Hello,

in squid.conf:

# TAG: always_direct
# Usage: always_direct allow|deny [!]aclname ...
#
# Here you can use ACL elements to specify requests which should
# ALWAYS be forwarded by Squid to the origin servers without using
# any peers. For example, to always directly forward requests for
# local servers ignoring any parents or siblings you may have use
# something like:
#
# acl local-servers dstdomain my.domain.net
# always_direct allow local-servers

So, what's "origin servers" by definition in Squid?
In reverse-proxy mode, does it mean the peers which have an originserver
 option?
In normal proxy mode, does it mean a domain name's destination IP
address? for examle, www.google.com's original server is 64.233.189.147.

Thank you.

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