+ /// to allow user to give is own comparison function
+ void SetUserLessThanFunction( BOOL_FUNCTION_PFILE_PFILE_POINTER userFunc )
+ { UserLessThanFunction = userFunc; }
+
+ XCoherentFileSetmap SplitOnOrientation(FileList *fileSet);
+ XCoherentFileSetmap SplitOnPosition(FileList *fileSet);
+ XCoherentFileSetmap SplitOnTagValue(FileList *fileSet,
+ uint16_t group, uint16_t element);