This element serves as the head of a substitution group which may contain anycoverage whose type is derived from gml:AbstractCoverageType. It may act as a variable inthe definition of content models where it is required to permit any coverage to bevalid.
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
Source
<element name="AbstractCoverage" type="gml:AbstractCoverageType" abstract="true" substitutionGroup="gml:AbstractFeature"><annotation><documentation>This element serves as the head of a substitution group which may contain any coverage whose type is derived from gml:AbstractCoverageType. It may act as a variable in the definition of content models where it is required to permit any coverage to be valid.</documentation></annotation></element>