Usage: CTCP <nick> CLIENTINFO [<ctcpcommand>]
CLIENTINFO returns the known CTCP commands from another client in a list.
You can inspect commands further by calling 'CLIENTINFO VERSION' for
example. You will (or should) be given a one-line explanation of
what this command is supposed to do.
To find out about your own client services, execute a CLIENTINFO
on yourself: CTCP mynick CLIENTINFO
Warning:
Some CTCP commands are not supposed to be sent by hand,
in particular ERRMSG, DCC, and SED.
ircii 20190117