Volume D is the code, it’s interesting because the literate programming approach where the raw code is transformed into a fully typeset version for printing. h

Volume D is the code, it’s interesting because the literate programming approach where the raw code is transformed into a fully typeset version for printing. https://en.m.wikipedia.org/wiki/Literate_programming https://en.m.wikipedia.org/wiki/Literate_programming Volume B is the code for TeX.