On 2022-05-02 07:00, Gerald Klix via Cuis-dev wrote: > AFIR, PyPy does the same (using ropes), Strings in Python are > immutable. Ah! Not a Python user. If I had to choose, I would use Ropes over Strings. Fortunately.. BTW: "AFIR" = ALTERNATIVE FUELS INFRASTRUCTURE REGULATION ?? Perhaps AFAIK ? Cheers, -KenD