<xsd:element name="observation" id="el.observation">
    <xsd:annotation>
        <xsd:documentation>
            <h:div class="summary" xmlns:h="http://www.w3.org/1999/xhtml">An observation or occurrence.</h:div>
            <h:div class="description" xmlns:h="http://www.w3.org/1999/xhtml">A container for any events that need to be recorded, whether planned or not. They can include notes,  measurements, conditions that may be referenced elsewhere, etc. There are no controlled semantics.</h:div>
            <h:div class="example" href="observation1.xml" xmlns:h="http://www.w3.org/1999/xhtml" />
        </xsd:documentation>
    </xsd:annotation>
    <xsd:complexType mixed="true">
        <xsd:sequence minOccurs="0" maxOccurs="unbounded">
            <xsd:any processContents="lax" />
        </xsd:sequence>
        <xsd:attributeGroup ref="title" />
        <xsd:attributeGroup ref="id" />
        <xsd:attributeGroup ref="convention" />
        <xsd:attributeGroup ref="dictRef" />
        <xsd:attributeGroup ref="type" />
        <xsd:attributeGroup ref="count" />
    </xsd:complexType>
</xsd:element>