Introduction

Abstract

The development of complex software systems on a large scale is usually a complicated activity and process. It may involve many developers, possibly with different backgrounds, who need to work together as a team or teams in order to ensure the productivity and quality of systems within a required schedule and budget. Each developer plays a specific role, for example, as an analyst, designer, programmer, or tester, and is usually required to produce necessary documents. The documents may need to be provided to other developers in the team for reading or for assisting them in performing their tasks. For this reason the documents need to be well presented, with appropriate languages or notations, so that they can be understood accurately and used effectively.