A couple things to help out...

First, to prevent someone flooding you from the server with "hello"...

Code:
on *:text:hello*:#yourchan: {
  if (%flood.hello == $null) {
    msg $chan Hello, $nick $+ .
    set -u5 %flood.hello 1
  }
}


Also, in case you don't know, if you use aliases as mentioned above, then to use them, you type /h or /hl instead of just typing h or hl.

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