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Good article. This little line interests me:

> For the last part a PEG, actually in this case an EBNF interpreter is needed.

Not sure how I should parse this. Should I read it as:

For the last part, a PEG interpreter is needed. Actually an EBNF interpreter is needed.

Because a PEG is just a spec, you can't substitute an interpreter for it

Thanks for the feedback, I tried to add a paragraph explaining it a bit more.

Please let me know if it did not help, thanks.