extern int mlt_properties_init( mlt_properties, void *child );
extern mlt_properties mlt_properties_new( );
extern mlt_properties mlt_properties_load( const char *file );
+extern int mlt_properties_preset( mlt_properties self, const char *name );
extern int mlt_properties_inc_ref( mlt_properties self );
extern int mlt_properties_dec_ref( mlt_properties self );
extern int mlt_properties_ref_count( mlt_properties self );