docs: function(add) {
  			var act, sig = this.context.gui.$contextid;
  			var type = gui.BROADCAST_KEYEVENT;
  			if (this._global) {
  				act = add ? "addGlobal" : "removeGlobal";
  				gui.Broadcast[act](type, this);
  			} else {
  				act = add ? "add" : "remove";
  				gui.Broadcast[act](type, this, sig);
  			}
  		}