A debug listing file contains a line-numbered listing of a procedure with all preprocessor directives expanded and all include files inserted. The Debugger displays this listing in the source code pane to indicate breakpoints and the next line to execute in the current procedure.
You can generate a debug listing in two ways:
Automatically by running a procedure during a debugging session.
Manually by compiling a procedure explicitly using either the ABL COMPILE statement or the Application Compiler from the ADE Desktop.