Library /sys$common/syshlp/tcpip$ftp_help.hlb DELETE, Qualifiers, /DIRECTORY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Optional. The /DIRECTORY qualifier must follow immediately after
    the DELETE command without a space.

    Deletes an empty directory. To delete a directory that is not
    empty, you must first delete the contents of the directory.