Added in 2.3
/leave [#channel] [message]
Leaves a channel with an optional part message.
If no channel is defined, current one will be used.
Same as /part.
[#channel] - Channel to part.
[message] - Part message.
;Part current channel with part message "See you later!". /leave See you later! ;Part #channel with part message "See you later!". /leave #channel See you later!