Data Type : Handles
BLOCK - A physical memory block within a BLOCKID.
typedef WORD BLOCK; /* pool block handle */
Type BLOCK is used to specify a particular memory block that is contained within a pool of blocks (BLOCKID structure). API users should consider it a basic data entity from which the BLOCKID structure is built. There is no need for API users to use a BLOCK data item directly; there are API macros provided that abstract the necessary operations to the BLOCKID level.