What does it mean? (Endgame chat)

Prexxi

[...]

3 of them and me said "gg" and that's it. But one said "### RGLE"

What does RGLE mean? I'm just curious and can't find an explanation. The match wasn't going well. But after seeing their behavior, I've lost the desire to play seriously.

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EDIT:

Okay nevermind. One toxic player more who wants to destroy other gamers fun. Thread can be closed.

Gay Myers (Luzi)

Closed at OPs request