This guide will be used for developing a system requirements specification. A System is a set of interconnected elements constituted to achieve defined objectives by performing specified functions. Development includes the thought process involved in the collection, analysis, and organization of the requirements. This guide addresses conditions for incorporating operational concepts and configuration design requirements into the system specifications. It will also describe the necessary content and qualities of a good system specification and present several prototype outlines. This document will serve as a guide for defining functional, performance and interface requirements for a system. This guide will recommend methods for specifying the requirements and capabilities for systems. System specifications developed using this guide will: 1) Facilitate a contracting agent to specify requirements for a system to potential designers/developers. 2) Provide templates for writing/auditing system specifications, and 3) Provide a general overview of a system which may be required by trainers, support personnel, or other users. Once completed, this guide will provide a foundation on which an IEEE tutorial on Developing System Specification can be built. New IEEE Standard - Superseded. Guidance for the development of the set of requirements, System Requirements Specification (SyRS), that will satisfy an expressed need is provided. Developing a SyRS includes the identification, organization, presentation, and modification of the requirements. Also addressed are the conditions for incorporating operational concepts, design constraints, and design configuration requirements into the specification. This guide also covers the necessary characteristics and qualities of individual requirements and the set of all requirements.