The source DESCRIPTION for this object is empty (just "."), giving no detail; based on its position immediately after the summary-LSA control and before the row's status object, and standard OSPF terminology, this most plausibly controls whether the ABR translates Type-7 NSSA LSAs into Type-5 external LSAs for the rest of the OSPF domain. An admin would enable this on the ABR responsible for exporting an NSSA area's external routes elsewhere, though this reading is inferred rather than stated by the vendor's own text.