Except for the extended private area page tables, which are pageable, the local system queue area (LSQA) for any swapped-in address space is fixed in central storage (above 16 megabytes, if possible). It remains so until it is explicitly freed or until the end of the job step or task associated with it. The number of LSQA frames allocated in central storage might increase or decrease to meet the demands of the system. If preferred storage is required for LSQA and no space is available in the preferred area, and none can be obtained by stealing a non-fixed/unchanged page, then the "reconfigurable area" is reduced by one storage increment, and the increment is marked as preferred area storage. If there is no "reconfigurable area" to be reduced, a page is assigned from the V=R area.