<para>Returns a geometry that represents the point set union of
the Geometries.</para>
- <para>Performed by the GEOS module</para>
+ <para>Performed by the GEOS module.</para>
- <para>Do not call with a GeometryCollection as an argument</para>
+ <para>Do not call with a GeometryCollection as an argument.</para>
- <para>NOTE: this is renamed from "union" because union
- is an SQL reserved word</para>
+ <para>NOTE: this function was formerly called GeomUnion(),
+ which was renamed from "Union" because
+ UNION is an SQL reserved word.</para>
<para>OGC SPEC s2.1.1.3</para>
</listitem>
<listitem>
<para>Returns a geometry that represents the point set union of
- this all Geometries in given set.</para>
+ all Geometries in given set.</para>
- <para>Performed by the GEOS module</para>
+ <para>Performed by the GEOS module.</para>
- <para>Do not call with a GeometryCollection in the argument set</para>
+ <para>Do not call with a GeometryCollection in the argument set.</para>
- <para>Not explicitly defined in OGC SPEC</para>
+ <para>Not explicitly defined in OGC SPEC.</para>
</listitem>
</varlistentry>