int  initDebug(char ***mime_types, int *nrtypes, float **prefs);
  int  openDebug(const W3ADocumentInfo doc,  Widget  window, long id);
 int writeDebug(long id, const char *buf, size_t nbytes);
  int  closeDebug(long id);
 void eventDebug(long id, long source, long eventtype, void *params);
  int  infoDebug(long id, W3ADocumentInfo *doc);