Added in 2.2
Returns information about nicknames listed in the Address book.
Nick can be a wildcard.
nick|N - The nick to lookup, if N = 0, number of nicks, otherwise the Nth nick.
[N] - if N = 0, number of nicks, otherwise the Nth nick. (optional)
.nick - The nickname.
.info - The name.
.website - The website.
.address - The address. (AdiIRC only)
.email - The email.
.picture - The picture filename.
.noteN - The Nth note.
//echo -ag Number of nicks in the Address book is $abook(*, 0) //echo -ag The first nick in Address book is $abook(*, 1)