Ah, I see.  Then perhaps phrase it slightly differently the first time, perhaps something like "PythonTeX includes a class that provides important utilities."? Later mentions of "utilities class" are then more clearly not a name, because you introduce it that way.

So is the idea that support for other languages is implemented by replacing `PythontexUtils` with, say, `RubytexUtils` or something like that?  If so, you might also very briefly mention that this class is different for different languages (as it was clearly not apparent to me on first read).