<xsd:element name="step">
  <xsd:annotation>
    <xsd:documentation>
      <type>Element</type>
      <name>step</name>
      <comment>The element step is a metadata element specifying facts about a workflow step occurred to the document. For each event, a date, a type, an agent (and the corresponding role) that generated the action must be referenced. The outcome, too, can be specified.</comment>
    </xsd:documentation>
  </xsd:annotation>
  <xsd:complexType>
    <xsd:complexContent>
      <xsd:extension base="anyOtherType">
        <xsd:attributeGroup ref="date"/>
        <xsd:attributeGroup ref="agent"/>
        <xsd:attributeGroup ref="role"/>
        <xsd:attributeGroup ref="refers"/>
        <xsd:attributeGroup ref="outcome"/>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>
</xsd:element>