5. The computer-implemented system of claim 3 , further comprising means for confirming selection of the one or more grouped predicates for ungrouping.
5. The computer-implemented system of claim 3 , further comprising means for confirming selection of the one or more grouped predicates for ungrouping. 6. The computer-implemented system of claim 5 , further comprising means responsive to selection confirmation for removing the indications of the grouping from the first display area.