/WORK

 /WORK[=work-file] (default)
 /NOWORK

 Determines the work file, if any, that TPU uses to swap memory for
 editing very large files.  The work file is automatically deleted
 when you exit.  If you invoke TPU and disable the /WORK qualifier,
 TPU does not have a work file.  In this case, the amount of memory
 available to TPU limits the size of the files you can edit.

 You cannot use wildcards to specify the work file.  There is one work
 file per editing session.  Default file type is .TPU$WORK.

 By default, TPU creates a work file named TPU$WORK.TPU$WORK in
 SYS$SCRATCH, which is usually your top-level, login directory.  There
 are two ways to specify a different work file:

 o  Define the TPU$WORK logical name to specify the work file.

    This is useful if you want the work file created in an area other
    than SYS$SCRATCH, such as on a larger disk.  You can put the
    definition in your LOGIN.COM file.

 o  Use /WORK= and specify the work file you want created.

    This overrides any definition of the TPU$WORK logical name.  For
    example, the following command invokes TPU, specifying the work
    file to be MYWORK.TPU$WORK:

       $ EDIT/TPU /WORK=mywork

 To create the work file in an area other than SYS$SCRATCH, specify
 the device (disk) and directory of the work file.

 If you not want TPU to create a workfile, use /NOWORK.  This
 reduces consumption of system resources and makes startup faster.
 Generally, you can use /NOWORK unless your system has limited memory
 or unless you edit very large files or large numbers of files.