Mathematica's notebook files come to mind, as does Donald Knuth's literate programming work. DrScheme lets you insert images into the program text directly: ht

Mathematica's notebook files come to mind, as does Donald Knuth's literate programming work. DrScheme lets you insert images into the program text directly: http://maclab.cs.uchicago.edu/tutorials/DrScheme.html#_Adding_an_Image http://maclab.cs.uchicago.edu/tutorials/DrScheme.html#_Addin...