The graphical counterpart to outliners are mind mappers. They can be professional mappers, software developers, data analysts, or members of the public. The equivalent of ORMs for document-oriented databases are called object-document mappers (ODMs). Early NES mappers are composed of 7400 series discrete logic chips. Some semantic mappers are static in that they will do a one-time data transforms. Thus most third party mappers will only be found in Famicom or unlicensed cartridges. Crisis mappers are usually volunteers, meaning they contribute non-wage labor. It will also build MyBatis mappers and sessions and inject them into other beans. Bitmappers drew the walls, objects, etcetera, and mappers added images to the rooms. Viking 1 and 2 followed, with not merely Infrared Thermal Mappers (IRTM). These chips are also known as "mappers". The gains from some mappers reading load from local disks, on average, is minor. Crisis Mappers, Standby Task Force, Sempo, Digital Humanitarian Network and Relief 2.0 Inc.