Thanks for figuring all that out and laying it out so clearly!<p>More details on my flavor of literate programming: <a href="http:&#x2F;&#x2F;akkartik.name&#x2F;post&#x2F;wart-layers" rel="nofollow">http:&#x2F;&#x2F;akkartik.name&#x2F;post&#x2F;wart-layers</a>