 reloading of encrypted
        passwords during dump/restore.
       </P
><P
>        Note that older clients might lack support for the MD5
        authentication mechanism that is needed to work with passwords
        that are stored encrypted.
       </P
></DD
><DT
><TT
CLASS="LITERAL"
>VALID UNTIL</TT
> '<TT
CLASS="REPLACEABLE"
><I
>timestamp</I
></TT
>'</DT
><DD
><P
>        The <TT
CLASS="LITERAL"
>VALID UNTIL</TT
> clause sets a date and
        time after which the role's password is no longer vali