Someone

#ECHO off
on *:text:*:#channame: { msg $chan $1- }
#ECHO end
on *:input:#channame:{
  if ($1 == !on) { .enable #ECHO | echo -a #ECHO enabled }
  if ($1 == !off) { .disable #ECHO | echo -a #ECHO disabled }
  if ($group(#echo) == on) { msg $chan $1- }
}
on *:text:*:#channame:{
  if ($1 == !on) { .enable #ECHO | echo -a $nick Enabled #echo } 
  if ($1 == !off) { .disable #ECHO | echo -a $nick Disabled #echo } 
}