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(1) Using or exploiting errors in design, features which have not been documented, and/or "program bugs" to gain access that is otherwise not available, or to obtain a competitive advantage over other players.
(2) Connecting, or creating tools that allow you to connect, to World of Warcraft's proprietary interface or interfaces, other than those explicitly provided by Blizzard Entertainment for your use.
(3) Using tools that hack or otherwise alter the World of Warcraft client or server software.
(4) Using software products that "packet sniff" or provide scripting and/or macroing to obtain information from World of Warcraft.
(5) Anything that Blizzard Entertainment considers contrary to the "essence" of World of Warcraft.