<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-string" />
  <name value="StringPSON" />
  <title value="string (PS-ON)" />
  <status value="active" />
  <fhirVersion value="4.0.1" />
  <kind value="primitive-type" />
  <abstract value="false" />
  <type value="string" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/string" />
  <derivation value="constraint" />
  <differential>
    <element id="string.value">
      <path value="string.value" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>