To assist you in locating information, the flow of the chapters moves from more general usage information to more specific reference and utilization information.

Chapter 1: “About GT.M” gives an overview of the features of the GT.M programming system.

Chapter 2: “GT.M Language Extensions” provides summary tables of the GT.M language extension, grouped by purpose.

Chapter 3: “Development Cycle” gives an introduction to program development in the GT.M environment.

Chapter 4: “Operating and Debugging in Direct Mode” describes basic elements of operating in Direct Mode and the features available for debugging in Direct Mode.

Chapter 5: “General Language Features of M” describes features of M as a programming language that are important in using the reference information given in the “Commands”, “Functions”, and “Intrinsic Special Variables” chapters.

Chapter 6: “Commands” is a comprehensive description of each GT.M command. Entries are in alphabetical order.

Chapter 7: “Functions” is a comprehensive description of each GT.M function. Entries are in alphabetical order.

Chapter 8: “Intrinsic Special Variables” is a comprehensive description of each GT.M intrinsic special variable. Entries are in alphabetical order.

Chapter 9: “Input/Output Processing” describes input/output facilities available in GT.M.

Chapter 10: “Utility Routines” describes library utilities provided with GT.M for performing frequently used M tasks.

Chapter 11: “Integrating External Routines” describes how to call GT.M routines from routines created in other programming languages and how to call out of GT.M routines to these external programs.

Chapter 12: “Internationalization” describes the facilities available for using GT.M successfully with languages other than American English.

Chapter 13: “Error Processing” describes methods for error handling in GT.M.

Chapter 14: “Triggers” describes the trigger facility available with GT.M.