on *:TEXT:?world:#: {
 if (%cmd [ $+ [ $chan ] ] == off) { halt }
  notice $nick %pc [ $+ [ $chan ] ]
}

on *:TEXT:!cmdoff:#: {
 if ($nick !isop $chan) { halt }
  set %cmd [ $+ [ $chan ] ] off
  msg $chan 11,13 All commands are now disabled for $chan $+ . To enable commands type !cmdon
}