The Navy has long been aware of a literacy gap existing between the level at which Navy technical documents are written and the reading comprehension level of enlisted personnel. In order to provide guidance in the restructuring of text and the limiting of vocabulary to reduce this gap, the Training Analysis and Evaluation Group developed the Computer Readability and Editing System (CRES). This system not only analyzes the sentence construction of various reading materials and determines the reading grade level, but it also provides suggestions for simplification and clarification of the material. Intended to serve as a programmer's reference guide to assist in the implementation, maintenance, and modification of CRES, as well as an aid in its conversion to other languages and machines, this report is divided into two sections: (1) a brief description of the CRES and its major options and sub-options, and (2) a detailed description of the individual programs comprising the system and a commented listing for each program. Eight related reports are listed as references, and appendices include word list definitions and the control file describing each word list data file, a list of programs and data files included in CRES, sample flowcharts for the creation and maintenance of the word lists, and a sample text passage and the output obtained from a CRES analysis of the text. (DJR)