#define RETRO_MEMDOMAIN_FLAG_LABEL_ARTIFICIAL      (1 << 18)  /* Labels the memory domain as being somewhat fictitious, provided for convenience */
#define RETRO_MEMDOMAIN_FLAG_LABEL_CHEATS          (1 << 19)  /* Labels the memory domain as being suitable for cheat searching */
#define RETRO_MEMDOMAIN_FLAG_LABEL_BUS             (1 << 20)  /* Labels the memory domain as being bus-like */
#define RETRO_MEMDOMAIN_FLAG_LABEL_FILE            (1 << 21)  /* Labels the memory domain as being file-like (a raw representation of a loaded ROM file, for instance) */
#define RETRO_MEMDOMAIN_FLAG_LABEL_MEMORY          (1 << 22)  /* Labels the memory domain as being a memory-like resource */
#define RETRO_MEMDOMAIN_FLAG_LABEL_DEFAULT         (1 << 23)  /* Labels the memory domain as being the ideal for a certain purpose. ex. DEFAULT BUS will be the main cpu's sysbus */