Defines the debug level in GUI mode.

The FGLGUIDEBUG environment variable defines the debug level, when the GUI mode is used by the program.

By setting FGLGUIDEBUG to 1, the runtime system will display AUI protocol exchanges in the stderr output of the console running the program on the server.

The runtime system displays detailed information about user interface events that occur during program execution.

This debug log is to be used in development context only. The output format can change in next product releases.