MessageAddChild( "inputdel (input_name)|all" );
MessageAddChild( "inputdeln input_number" );
MessageAddChild( "output (output_name)" );
+ MessageAddChild( "option (option_name)[=value]" );
MessageAddChild( "enabled|disabled" );
MessageAddChild( "loop|unloop (broadcast only)" );
MessageAddChild( "mux (mux_name)" );