Mastering Nim: A complete guide to the programming language

I think that the numbering of chapter sections and subsections in the book is very useful. I think that the online language documentation would benefit from this type of numbering as well.

Mastering Nim: A complete guide to the programming language

I was surprised at how light the text appears in the book. Is this the result of it being a print-on-demand book (I bought mine in June)? I think the aesthetic quality of the book would be improved if the text was heavier.