.warn [-a] [-c <channel>] <nick> [message...]
-a flag allows you to warn users anonymously by messaging the bot. This flag must be used in conjunction with the
-c flag to specify the channel. The nick must be a user present in the channel, and they will be sent the message (if one is provided) following the nick in the form of a notice.
A typical warning will be sent in a manner similar to the example below:
** Warning from lol768 in #korobi: * Warning: some message here
Anonymous warnings will use “a moderator” instead of including the nick of the issuing user.