*  in the active registry.  The output file will be named according to 
 *  the most recent call to CU_set_output_filename(), or a default if 
 *  not previously set.
 *
 *  @return An error code indicating the error status.
 */

CU_EXPORT void CU_set_output_filename(const char* szFilenameRoot);
/**< 
 *  Sets the root file name for automated test output files.