PERATOR ~&#62; (LEFTARG = anyelement, RIGHTARG = text, PROCEDURE = pair);
CREATE OPERATOR ~&#62; (LEFTARG = anyelement, RIGHTARG = anyelement, PROCEDURE = pair);
CREATE OPERATOR ~&#62; (LEFTARG = text, RIGHTARG = text, PROCEDURE = pair);</PRE
><P>
    </P
><P
>     The control file <TT
CLASS="FILENAME"
>pair.control</TT
> looks like this:

</P><PRE
CLASS="PROGRAMLISTING"
># pair extension
comment = 'A key/value pair data type'
default_version = '1.0'
relocatable = true</PRE
><P>
    </P
><P
>     While you 