The development at the University of Utah in concert with Latter Day Saints Hospital (LDS) in Salt Lake City UT began in the late 1950s as computing research support for the cardiovascular specialties, primarily by Homer Warner (Ref A9). The project was known as the Health Evaluation through Logical Processing (HELP) system and was intended as clinical decision support. It used the Systematic Nomenclature of Pathology (SNOP) coding and vocabulary system having four taxonomic axes and 10,000 terms for discharge diagnosis coding. It was designed as a comprehensive patient care record with prompts and reminders based upon formal logic decision rules applied to such areas as infection control, blood transfusion ordering (Refs).