Forums Scripts & Popups ctcp reply kick

THx Riamus2, wat does this do when coded this way?

ON *:JOIN:#chat: {
;; a fullstop (period ".")
.ctcp $nick version
set -u15 %joinedchan
}
ON *:CTCPREPLY:version*: {
if (echoX isin $1- || virus isin $1- || inviter isin $1- || ozinviter isin $1- && $nick ison #chat) {
ban -ku600 #chat $nick 2 14Inviter Script Detected
}