$PGBRKGRP
$PGBRKGRP GroupName
The $PGBRKGRP command defines a substitute page-break group (GroupName) that prints when a page overflow occurs in a group subordinate (at a lower level) to the group being defined.
For example, a report has three report groups (heading A, detail B, and subdetail C), each with multiple lines. If a page overflow occurs while subdetail C is printing, $PGBRKGRP in the definition of detail B could point to a single-line group that would print instead of detail B at the top of the page. Therefore, page overflow prints heading A, the substitute group for B, and the remaining subdetail lines in C.