CWEB can be used for literal programming in the C language. CWEB consist of a few programs, Tangle and Weave, which from one source text produce a TEX document and a compiler ready file. The standard CWEB macro definition file is meant for Plain TEX. This file was not that hard to adapt to a CONTEXT module, thereby not only providing access to whatever layout suitable, but also making possible fully interactive documents. This demonstation file shows the sources of the CWEB programs. The screen version is cross linked to the paper alternative.