Ja znalazłem tylko to... Pewnie wszyscy widzieli.
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A Skill Charm is something either purchased, or created by a player. Once you have one, what do you do with it? First off, you can use a Necklace (available from the outfitter in town) to learn that skill temporarily. It will last for 24 hours - a simple necklace will let you temporarily learn Skills belonging to your two professions. An expert necklace will let you temporarily learn any Skill for 24 hours, regardless of if it belongs to your profession or not. If it is an out of profession skill, then it will be treated as an Elite.
Skill charms can also be learned to permanently learn a skill, but in order to do this, you must first have a Skill Ring appropriate for the class of Skill you are trying to learn. For example, if you wanted to permanently learn a Warrior Skill from a charm, you would need a Warrior Skill Ring. These can be found as (rare!) drops from enemies, and the profession of the Ring is random, so you will probably have to trade with other players to get what you need. But once you have the Ring and the Charm, you can learn the skill permanently - it need only be from one of your two professions. (You can't permanently learn out of class skills.)
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http://guildwars.ogaming.com/data/1924~WPE.php