more relevant definitions from D1.1:2006, Annex K:
manual welding. Welding with the torch, gun or electrode holder held and manipulated by hand. Accessory equipment, such as part motion devices and manually controlled filler material feeders may be used. See automatic welding, machine welding, and semiautomatic welding.
semiautomatic welding. Manual welding with equipment that automatically controls one or more of the welding conditions.
automatic welding. Welding with equipment that requires only occasional or no observation of the welding, and no manual adjustment of the equipment controls. Variations of this term are automatic brazing, automatic soldering, automatic thermal cutting, and automatic thermal spraying.