Node: Correlation with the authoritative document, Previous: Beware of examples, Up: How to read this document
The authoritative document, called "norme" and written in french, only covers a subset of the mandatory items (denoted by MUST, SHALL, REQUIRED). Compliance to that document is checked thoroughly and strictly.
This document is more general. It expresses rules of thumbs and guidelines for elegance in C writing. It was extensively checked for compliance with the authoritative "norme", and can therefore be used as a substitute.