illustration wiki:
lustration is a visualisation such as drawing, painting, photograph or other work of art that stresses subject more than form. The aim of an Illustration is to elucidate or decorate a story, poem or piece of textual information (such as a newspaper article) by providing a visual representation of something described in the text.
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web wiki:
[her uses, see web.WEB is a computer programming system created by Donald Knuth as the first implementation of what he called "literate programming": the idea that one could create software as works of literature, by embedding bits of code inside descriptive text, rather than the reverse as is common practice in most programming languages.
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