This text provides information to serve as a foundation for any reader who wishes to develop and implement a wide variety of systems in Modula-2 and incorporates the proposed ISO standard. The environment is used to develop the programs Topspeed Modula-2 using MS DOS. It is suitable for the following courses: BTEC National and HNC/D Computing, BTEC HNC Information Technology, BSc Computer Science, A Level Computing, HNC Software Engineering, BSc Engineering, BABS, BSc CRTS.