Thank you for the feedback. I am also reading through the spec as a core part of writing the book. It is indeed critical to do so.

100% Agree

This is very interesting. I agree that some of the formatting puzzled me as well. I would assume this follows some standard even when the use of said standard is uncommon. I have for example not seen 1.000,00 € used, but I thought that perhaps if you live in Germany, France, or another EU country then it is common.