Neither integer-1 nor integer-2 can be specified in such a way as to cause any line of a report group to be presented outside the vertical subdivision of the page designated for that report group type, as defined by the PAGE clause. (See the section The PAGE Clause.)
Integer-2 can be zero.
If a relative LINE NUMBER clause is the first LINE NUMBER clause in the report group description entry, then the line number on which its print line is presented is determined by specified rules. (See the section Presentation Rules Tables.)