1 /DEFAULT
/DEFAULT=device:[directory] Specifies the default disk device and directory name that the system should use in this environment to locate and catalog files.
2 /PRIVILEGES
/PRIVILEGES=(priv1,priv2...) Specifies the privileges to add to the current privileges. Any enhanced privileges must be authorized.
3 /VERIFY
/VERIFY /NOVERIFY (default) Specifies whether you want DCL verification (both procedure and image) for future DO commands.