<element name="surfaceProperty" type="gml:SurfacePropertyType">
<annotation>
<appinfo>
<sch:pattern xmlns:sch="http://www.ascc.net/xml/schematron">
<sch:rule context="gml:surfaceProperty">
<sch:extends rule="hrefOrContent" />
</sch:rule>
</sch:pattern>
</appinfo>
<documentation>This property element either references a surface via the XLink-attributes or contains the surface element. surfaceProperty is the predefined property which can be used by GML Application Schemas whenever a GML Feature has a property with a value that is substitutable for _Surface.</documentation>
</annotation>
</element>
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