Infoprint XT communicates with the application exit by using these streams:

fd0 (STDIN)

Infoprint XT does not pass any data to the standard input of the application exit.

fd1 (STDOUT)

Infoprint XT redirects the standard output from the application exit to /dev/null.

fd2 (STDERR)

Infoprint XT captures anything that is written to standard error. Infoprint XT writes the information from standard error to the aioxlxbe.lst file in the working directory for the job.