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:"Program 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:"M 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:"Database Access Library" describes the symbols in the GT.M run-time library used to call into GT.M routines from external routines.

Chapter 13:"Internationalization" describes the facilities available for using GT.M successfully with languages other than American English.

Chapter 14:"Error Processing" describes methods for error handling in GT.M.