extern response_codes melted_list_nodes( command_argument );
extern response_codes melted_list_units( command_argument );
extern response_codes melted_list_clips( command_argument );
+extern response_codes melted_probe_clip( command_argument );
extern response_codes melted_set_global_property( command_argument );
extern response_codes melted_get_global_property( command_argument );