ecessary part of implementing this feature.
       </P
></LI
><LI
><P
>        Add the <A
HREF="spgist.html"
>SP-GiST</A
> (Space-Partitioned
        GiST) index access method (Teodor Sigaev, Oleg Bartunov, Tom
        Lane)
       </P
><P
>        SP-GiST is comparable to GiST in flexibility, but supports
        unbalanced partitioned search structures rather than balanced
        trees.  For suitable problems, SP-GiST can be faster than GiST in both
        index build time and search time.
       </P
><