/COMMAND[=command-file] (default)
  /NOCOMMAND

  Determines the DECTPU command file you want to use, if any.  A
  command file contains DECTPU procedures and executable statements to
  extend the editor.  For example, you can use a command file to create
  additional EVE commands, define keys, or set attributes.  You can
  also use a command file to set up a special text-processing
  environment for creating your own DECTPU application or for batch
  editing.

  You cannot use wildcards to specify the command file.  You can
  specify only one command file at a time.  Default file type is .TPU.

  There are three ways to specify the command file you want to use:

  o  Name the command file TPU$COMMAND.TPU.

     By default, DECTPU looks for this command file in your current
     directory.  Thus, you can have a different command file for each
     directory or subdirectory without having to specify the command
     file each time.

  o  Define the TPU$COMMAND logical name to specify the command file.

     This lets you use that command file for all editing sessions---
     including when you invoke DECTPU within MAIL or other utilities---
     and lets you keep that file in any convenient directory or
     subdirectory.  The logical name overrides the search for the
     TPU$COMMAND.TPU file.  You can put the definition in your
     LOGIN.COM file.  For example, the following commands define
     TPU$COMMAND as MYPROCS.TPU in your top-level, login directory and
     then invoke DECTPU using that command file:

        $ DEFINE TPU$COMMAND sys$login:myprocs
        $ EDIT/TPU

  o  Use /COMMAND= and specify the command file on the command line.

     This overrides any definition of the TPU$COMMAND logical name and
     overrides the default search for the TPU$COMMAND.TPU file.  For
     example, the following command invokes DECTPU, using a command
     file named MYPROCS.TPU in your current, default directory:

        $ EDIT/TPU /COMMAND=myprocs

  If the command file you specify either with /COMMAND or by defining
  TPU$COMMAND is not found, the editing session is aborted, returning
  you to the DCL level.

  If you do not want a command file executed, use /NOCOMMAND---
  typically if you defined the TPU$COMMAND logical name or created a
  TPU$COMMAND.TPU file but do not want it used for a particular editing
  session.  Also, /NOCOMMAND makes startup faster because DECTPU then
  does not search for a command file and does not have to compile and
  execute code at startup.

  At startup, DECTPU compiles and executes the command file, if one is
  being used, after loading a section file (if any) and before EVE
  executes an initialization file (if any).  Thus, you can use a
  command file in conjunction with a section file and an initialization
  file.  Procedures, settings, and key definitions in a command file
  override those in the section file.  For more information about
  command files, see the DEC Text Processing Utility Reference Manual
  or use the online help in EVE and read the topic called Command
  Files.

  In EVE, you can create or update a command file by using the SAVE
  ATTRIBUTES command to save menu definitions for the DECwindows
  interface and most global settings ("attributes").  For more
  information, see the Extensible Versatile Editor Reference Manual or
  use the online help in EVE and read the topic called Attributes.