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That is Blizzard's method of "encrypting" or obfuscating strings. The tech started with realID and battletags where add-ons are unable to actually access anyone's real name even though you can see it. If you're familiar with text formatting, the system uses | then a letter then data input then another | and usually the same letter lowercase. This is most commonly seen with colors using |chexcodeTEXT|r and clickable inline links using |Hlinkdata|hVisibleText|h. Communities, group finder, and bnet friends all use |Kdata|k for obfuscation.
It is not possible for code to read or save what you see.
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