Historical Rules · 1 October 2012
Rule 400.1
Official source text from the 1 October 2012 Rules release
A zone is a place where objects can be during a game. There are normally seven zones: library, hand, battlefield, graveyard, stack, exile, and command. Some older cards also use the ante zone. Each player has his or her own library, hand, and graveyard. The other zones are shared by all players.