Both the ACUCOBOL-GT runtime and debugger support an option to output file I/O trace information during program execution. This facility can be very helpful when you are investigating program execution problems. When file tracing is enabled, the runtime outputs a message to the error file for every file I/O-related action that it executes.
To enable file tracing, the trace level must be set to "7" or higher.
To learn how to enable file tracing, see Handling Program Execution Problems and FILE_TRACE.