Return a summarized result set.
>>-GROUP--BY(data-value)--FROM(cpsm-token)--TO(cpsm-token)------> .-ALL-------------------. >--+-----------------------+--+-----------------+---------------> +-FILTER(cpsm-token)----+ '-COUNT(data-ref)-' +-MARKED----------------+ +-NOTFILTER(cpsm-token)-+ '-NOTMARKED-------------' >--+---------------------------------------+--------------------> '-SUMOPT(data-area)--LENGTH(data-value)-' >--THREAD(cpsm-token)--RESPONSE(data-ref)--REASON(data-ref)----><