Content type with document link

<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
  <!-- Parent ContentType: Document (0x0101) -->
  <ContentType ID="0x010100F605427E752A4BAA862209C34B3F09C6" 
               Name="VA BaseDocument" 
               Group="Virtual Affairs Content Types" 
               Description="VA BaseDocument" 
               Inherits="TRUE" 
               Version="0" >
    <FieldRefs>
      <FieldRef ID="{43B20842-67DB-46E8-AF77-67A6D2411343}" 
                DisplayName="Confidentiality" 
                Required="TRUE" 
                Name="Confidentiality" />
    </FieldRefs>
    <DocumentTemplate TargetName="~Site/Documents/PurchaseOrder.dotx" /> 
  </ContentType>
</Elements>