direction descriptions are specified by a compass point code, a keyword, a textual description or a reference to a description.A gml:compassPoint is specified by a simple enumeration. In addition, thre elements to contain text-based descriptions of direction are provided. If the direction is specified using a term from a list, gml:keyword should be used, and the list indicated using the value of the codeSpace attribute. if the direction is decribed in prose, gml:direction or gml:reference should be used, allowing the value to be included inline or by reference.
<complexType name="DirectionDescriptionType"><annotation><documentation>direction descriptions are specified by a compass point code, a keyword, a textual description or a reference to a description. A gml:compassPoint is specified by a simple enumeration. In addition, thre elements to contain text-based descriptions of direction are provided. If the direction is specified using a term from a list, gml:keyword should be used, and the list indicated using the value of the codeSpace attribute. if the direction is decribed in prose, gml:direction or gml:reference should be used, allowing the value to be included inline or by reference.</documentation></annotation><choice><element name="compassPoint" type="gml:CompassPointEnumeration"/><element name="keyword" type="gml:CodeType"/><element name="description" type="string"/><element name="reference" type="gml:ReferenceType"/></choice></complexType>