I am a fan of the literate programming style for personal projects. For a very well executed and interactive example check out http://dave.kinkead.com.au/mode

I am a fan of the literate programming style for personal projects. For a very well executed and interactive example check out http://dave.kinkead.com.au/modelling-the-boundary-problem/ http://dave.kinkead.com.au/modelling-the-boundary-problem/