welcome script [chat bot tutorial]

on *:join:#: { if ($readini(Welcome.ini,n,Messages,$nick)) msg # $v1 }
on *:text:!welcome *:#: {
  if ($nick isop #) {
    if ($readini(Welcome.ini,n,Messages,$nick)) {
      msg # changed $nick $+ 's welcome message to " $+ $2- $+ "
    }
    else {
      msg # set $nick $+ 's welcome message to " $+ $2- $+ "
    }
    writeini Welcome.ini Messages $nick $2-
  }
}
on *:text:!setwelcome *:#: {
  if ($nick isop #) {
    msg # set $2 $+ 's welcome message to " $+ $3- $+ "
    writeini Welcome.ini Messages $2 $3-
  }
}