| Item | Value |
| Standard error (stderr) unit number | 0 |
| Standard input (stdin) unit number | 5 |
| Standard output (stdout) unit number | 6 |
| Default maximum record length for formatted output | 1024 characters |
| Default maximum record length for unformatted output | 2147483647 bytes |
The default directory used for files opened with STATUS='SCRATCH' is
‘/tmp’ on Unix and the Windows temporary directory on Windows.
This default may be overridden with the TMPDIR environment variable.