A property that has a surface as its value domain can either be an appropriate geometry element encapsulated in an element
of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere
in the same document). Either the reference or the contained element must be given, but neither both nor none.
Reference to an XML Schema fragment that specifies the content model of the propertys value. This is in conformance with the
XML Schema Section 4.14 Referencing Schemas from Elsewhere.
The 'actuate' attribute is used to communicate the desired timing
of traversal from the starting resource to the ending resource;
it's value should be treated as follows:
onLoad - traverse to the ending resource immediately on loading
the starting resource
onRequest - traverse from the starting resource to the ending
resource only on a post-loading event triggered for
this purpose
other - behavior is unconstrained; examine other markup in link
for hints
none - behavior is unconstrained
The 'show' attribute is used to communicate the desired presentation
of the ending resource on traversal from the starting resource; it's
value should be treated as follows:
new - load ending resource in a new window, frame, pane, or other
presentation context
replace - load the resource in the same window, frame, pane, or
other presentation context
embed - load ending resource in place of the presentation of the
starting resource
other - behavior is unconstrained; examine other markup in the
link for hints
none - behavior is unconstrained
<complexType name="SurfacePropertyType"><annotation><documentation>A property that has a surface as its value domain can either be an appropriate geometry element encapsulated in an element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere in the same document). Either the reference or the contained element must be given, but neither both nor none.</documentation></annotation><sequence minOccurs="0"><element ref="gml:_Surface"/></sequence><attributeGroup ref="gml:AssociationAttributeGroup"><annotation><documentation>This attribute group includes the XLink attributes (see xlinks.xsd). XLink is used in GML to reference remote resources (including those elsewhere in the same document). A simple link element can be constructed by including a specific set of XLink attributes. The XML Linking Language (XLink) is currently a Proposed Recommendation of the World Wide Web Consortium. XLink allows elements to be inserted into XML documents so as to create sophisticated links between resources; such links can be used to reference remote properties. A simple link element can be used to implement pointer functionality, and this functionality has been built into various GML 3 elements by including the gml:AssociationAttributeGroup.</documentation></annotation></attributeGroup></complexType>