#include "mlt_types.h"
extern mlt_field mlt_field_init( );
+extern mlt_field mlt_field_new( mlt_multitrack multitrack, mlt_tractor tractor );
extern mlt_service mlt_field_service( mlt_field self );
extern mlt_tractor mlt_field_tractor( mlt_field self );
extern mlt_multitrack mlt_field_multitrack( mlt_field self );