Part I describes how to start, stop, and interact with the Debugger as you debug your code. It is a complete guide to the features, terms, and principles of operation you need to know to use the Debugger effectively. Once you have begun a debugging session, the Debugger online help available from the Help menu of the Debugger window provides most of the information you need to use the Debugger.
Part II describes the logging infrastructure and various types of logging available to troubleshoot your code. It also provides guidelines and direction for using other diagnostic tools available for troubleshooting purposes.
Describes how to use the DEBUGGER and SESSION handles, which are ABL system handles that allow you to start the Debugger and control some Debugger features from an procedure.