extern KADMOS_ERROR KADMOS_API rec_group_labels(RecData *recdata);
extern KADMOS_ERROR KADMOS_API rec_group_labels(RelData *reldata);
extern KADMOS_ERROR KADMOS_API rep_group_labels(RepData *repdata);
recdata, reldata, repdataRecData, RelData or RepData.RE_SUCCESS or KADMOS error type.
When the results of re?_do() are delivered in basic labels, then these functions
transform them into group labels.