/sys$common/syshlp/helplib.hlb EXCHANGE, DELETE, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 file-spec[, . . . ]

    Specifies the names of one or more files to be deleted. You can
    specify wildcard characters in any of the file specification
    fields.

    To delete more than one file, separate the file specifications
    with commas or plus signs.

    The DELETE command does not delete a file with the SYS type
    unless you specify the /SYSTEM qualifier. EXCHANGE displays a
    message if it passes over one or more SYS files during a delete
    operation.

    EXCHANGE does not delete files with the type BAD if the file
    specification contains wildcards. When this happens, you will not
    receive a warning. Therefore, to delete files with the type BAD,
    enter their file specifications explicitly.