A comparison is made between the virtual storage size of the table and the external size in the table output library. If there is insufficient storage to write the table in place, it is written at the end of the table output library.
This parameter must have an unsigned integer value. For a call, it must be a fullword fixed binary integer.
The default value for this parameter is zero.
Padding permits future updating in place, even when the table has expanded in size. Should the table expand beyond the padding space, the table is written at the end of the table output library instead of being updated in place.