This report describes the structure and operation of the Coronal Dynamics (C/D) Project's data system. The instrument system, based on the island of Hawaii, has been fully described by Fisher et al. (1981), and the text given here is a logical and natural extension of that work, aimed at C/D data users. The intent of this document is two-fold: First, there is the task of accurately specifying the software system at the end of the development phase. Secondly, this is also a user's manual for the C/D systems, and as such is the most important of the C/D experiment system's documents from the viewpoint of the scientific user.