COMPATIBILITY MEMORY_FILE_SKIP_FREE
When a memory file is actually closed (which is not necessarily when the last user closes the file because of the ctKEEPOPEN attribute), the individual records or nodes are returned to the memory heap.
This keyword skips the free of memory at server shutdown for the individual memory records for memory files still open and assume that the server termination will (automatically) return the memory to the system. This may quicken the shutdown in the case of a large number of memory file records and/or nodes.