1    /CARRIAGE_CONTROL

   /CARRIAGE_CONTROL
   /NOCARRIAGE_CONTROL

   Determines whether carriage control or line feed characters or
   both are prefixed to the prompt string of the subprocess. The
   default is the current setting of the parent process.

2    /CLI

   /CLI[=cli]
   /NOCLI

   Specifies an alternate command language interpreter (CLI) for
   the subprocess to use. The CLI you specify must be located in
   SYS$SYSTEM and have the file type .EXE. The default is the CLI
   the parent process uses.

3    /INPUT

   /INPUT=file-specification

   Specifies an input file containing one or more commands for the
   spawned subprocess to execute. If you specify a command with an
   input file, the command is processed before the commands in the
   input file. The subprocess terminates when processing is complete.
   You cannot use wildcards in the file specification.

4    /KEYPAD

   /KEYPAD (D)
   /NOKEYPAD

   Determines whether DCL keypad symbols and the current DCL keypad
   state are copied from the DCL keypad in the parent process to the
   subprocess. Use the /NOKEYPAD qualifier if you do not want the key
   settings to be copied.

5    /LOGICAL_NAMES

   /LOGICAL_NAMES (D)
   /NOLOGICAL_NAMES

   Determines whether the system passes process logical names and
   logical name tables to the subprocess, except those marked CONFINE
   or created in executive or kernel mode.

6    /NOTIFY

   /NOTIFY
   /NONOTIFY (D)

   Determines whether a message is sent to the terminal to notify
   you that the subprocess has completed or aborted. Do not specify
   /NOTIFY unless you also specify the /NOWAIT qualifier.

7    /OUTPUT

   /OUTPUT=file-specification

   Specifies the output file to which the output of the SPAWN
   operation is to be written. The default is to direct the output
   to the current SYS$OUTPUT device. When you specify /NOWAIT, you
   should use /OUTPUT to specify an output other than SYS$OUTPUT
   to prevent the terminal from being used by both processes
   simultaneously.

8    /PROCESS

   /PROCESS=subprocess-name

   Specifies the name of the subprocess to be created. The default is
   USERNAME_n (where n denotes a unique number).

9    /PROMPT

   /PROMPT[=string]

   Specifies the DCL-prompt string for the subprocess. The default is
   to copy the current prompt string from the parent process. If you
   specify /PROMPT but do not specify a string, the default prompt is
   displayed.

10    /SYMBOLS

   /SYMBOLS (D)
   /NOSYMBOLS

   Determines whether the system passes DCL global and local symbols
   to the subprocess.

11    /WAIT

   /WAIT (D)
   /NOWAIT

   Controls whether the system waits until the subprocess is
   completed before enabling more commands to be issued to the parent
   process. The /NOWAIT qualifier enables you to enter more commands
   while the specified subprocess is running. When you specify
   /NOWAIT, you should also specify /OUTPUT to direct output to a
   file (rather than to the screen). This prevents the terminal from
   being used by both processes simultaneously.