on *:TEXT:@world *:#: {
   if ($2 == $null) { msg $chan 4Enter a channel please $nick
}   else { /msg $chan $chan($2).topic
} }
on *:TEXT:!world *:#: {
  if ($2 == $null) { msg $nick 4Enter a channel please $nick
}  else { /msg $nick $chan($2).topic }
}