Library /sys$common/syshlp/uafhelp.hlb MODIFY, Qualifiers, /PASSWORD  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PASSWORD=(password1[,password2])
       /NOPASSWORD

    Specifies up to two passwords for login. Passwords can be
    from 0 to 32 characters in length and can include alphanumeric
    characters, dollar signs, and underscores. Avoid using the word
    password as the actual password. Use the /PASSWORD qualifier as
    follows:

    o  To set only the first password and clear the second, specify
       /PASSWORD=password.

    o  To set both the first and second password, specify
       /PASSWORD=(password1, password2).

    o  To change the first password without affecting the second,
       specify /PASSWORD=(password, "").

    o  To change the second password without affecting the first,
       specify /PASSWORD=("", password).

    o  To set both passwords to null, specify /NOPASSWORD.

    When you modify a password, the new password expires
    automatically; it is valid only once (unless you specify
    /NOPWDEXPIRED). On login, the user is forced to change the
    password (unless you specify /FLAGS=DISFORCE_PWD_CHANGE).

    Note that the /GENERATE_PASSWORD and /PASSWORD qualifiers are
    mutually exclusive.