Thanks. It looks like you did a lot of work and there are good tips there. I didn't get it all on the first read and I want to suggest that over time you consider adding more details to the first section 3.1 with maybe some pencil sketches or whatever to clarify the numbers which you throw around very fast. Understanding this is sort of foundational to the rest and I get a bit jumbled by numbers and need the slow and easy 'explain it to me like a baby' text (don't anyone get funny and say "oooo, aaaa, gugu gaga, waaaa" -you know what I mean).