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

1 - /AUTHENTICATE

    Specifies that Kerberos authentication should be used for
    acquiring access to the remote node.

2 - /LOG

    Displays a message in SYS$OUTPUT when a file is transferred.

3 - /PRESERVE

    Preserves the file protection codes.

4 - /RECURSIVE

    Requests a subdirectory copy operation.

5 - /TRUNCATE

       /TRUNCATE=USERNAME

    Truncates the user name to 8 characters.

6 - /USERNAME

       /USERNAME=username

    Optional qualifier that specifies the remote user name. The
    standard operation is to log in to a remote system using the same
    user name as at the local terminal. The command supports quoted
    parameters in the /USERNAME value.