This directory contains noweb programs (written in Icon) that extend the basic noweb with some pretty-printing capabilities. By this we don't mean formatting, but just printing keywords in bold, comments in roman, mathematical operators using special symbols, etc. The pretty-printers work as noweb filters. There are 4 pretty-printers here, all generated from the same file, pp.nw. The pretty-printers are for C/C++, Icon, Turing (OOT), and Mathematica. pp.nw contains full documentation, and is written in a way that adding another language should be easy. (Let me know if you find it isn't so.) The pretty-printers work only with LaTeX2e, and you must have the cmttb10 font. There are also filters that write noweb index entries (autodefs) for Turing and Mathematica.