What does postTag PRP mean

Hello,

In line 67 of EnglishWordRepeatBeginningRule exists the code line: if (token.hasPosTag("PRP"))
and I was wondering what a posTag of “PRP” means.
Also, is there a way to get to know the possible posTags as it may be helpful for next rules.

You can find the definitions here: languagetool/tagset.txt at master · languagetool-org/languagetool · GitHub

@dnaber Oh, thanks a lot!