I consider myself to be a bit of a font snob, and looking at that block of example code strikes me as practically unreadable. Obviously a lot of time and effor

I consider myself to be a bit of a font snob, and looking at that block of example code strikes me as practically unreadable. Obviously a lot of time and effort has gone into developing this book, it would be a shame if the project was undermined by ignoring book design and legibility.