[Dovecot] IMAP extensions & their meanings

I know that is is not really a Dovecot problem; however, I was wondering where I could get a complete list of the terms used in the 'capability' line. I have not had any success in finding out what things like "XLIST" refer to. I don't believe that is one that Dovecot uses; however, I have seen it with other IMAP servers, plus lots of other flags that I do not understand.

I tried Googling but only got a few sporadic and basically useless answers.

Thanks!

-- Jerry Dovecot.user@seibercom.net

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