VMS Help DIRECTORY, Qualifiers, /SIZE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SIZE[=option]
       /NOSIZE (default)

    Displays the size in blocks of each file. If you omit the option
    parameter, the default lists the file size in blocks used (USED).
    Specify one of the following options:

    ALL        Lists the file size both in blocks allocated and
               blocks used.

    ALLOCATION Lists the file size in blocks allocated.

    USED       Lists the file size in blocks used.

    The size of this field can be altered by supplying the size value
    of the /WIDTH qualifier.