TMs and HMs

TMs and HMs, originated from Technical Machines and Hidden Machines, are items that will teach your Pokémon new moves, the kind of moves that they will not learn when they level up. It was only until Generation V that TMs could be used once. In Generation I to IV, TMs were used once and HMs were able to use multiple times and HMs are permanent unless you go to the Move Deleter, which in Generation IV, is in Canalave City. TMs and HMs have their own pocket in Generation I to IV. It is not yet known if TMs in Generation V (Pokémon Black and White) have their own pocket or if Generation V even has HMs. You can practically get TMs (and HMs) anywhere from anyone, for example in Generation IV (Sinnoh region/ Pokémon Diamond, Pearl and Platnium) you can get the HM Defog from a certain man in Pastoria City's Great Marsh Safari Game.

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