OK, I must say that you've got a point there. ++. And I also took you point that here is no need to try to explain it, that's not the issue.
This is Rosetta Code, quite often the code there is very concise, almost golf. But your last example is not from Rosetta, but from the P6 documentation, so this is no excuse, and I agree that this is quite obscure.
Having said that, there is really a lot of code out there that is easy to understand, you can read and write a lot of code without getting into what appears to be an obfuscated contest entry.
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