anchor.diff:  <v:jsonset var="positionClassUriJson">${positionClass}</v:jsonset>
   <v:jsonset var="orgClassUriJson">${orgClass}</v:jsonset>
   
  +<c:set var="requiredHint" value="<span class='requiredHint'> *</span>" />
  +<c:set var="yearHint" value="<span class='hint'>(YYYY)</span>" />
  +
  +<%-- Configure add vs. edit --%>
  +<%
  +
  +    String objectUri = (String) request.getAttribute("objectUri");
  +    if (objectUri != null) { // editing existing entry
  +%>
  +        <c:set var="editMode" value="edit" />
  +        <c:set var="titleVerb" value="Edit" />
  +        <c:set var="submitButtonText" value="Edit Position" />
  +        <c:set var="disabledVal" value="disabled" />
  +        <%-- Start year is required for an add but not an edit (so editors don't have to look up the start date in order
  +             to edit an existing entry with no start date). --%> 
  +        <c:set var="startYearRequired" value="" />
  +        <c:set var="startYearRequiredHint" value="" />
  +<% 
  +    } else { // adding new entry
  +%>
  +        <c:set var="editMode" value="add" />
  +        <c:set var="titleVerb" value="Create" />
  +        <c:set var="submitButtonText" value="Position" />
  +        <c:set var="disabledVal" value="" />
  +        <c:set var="startYearRequired" value="\"nonempty\"," />
  +        <c:set var="startYearRequiredHint" value="${requiredHint}" />
  +<%  } %> 
  +
  +
  +
   <c:set var="editjson" scope="request">
     {
       "formUrl" : "${formUrl}",
  
positive.code:       },      
        "startYear" : {
           "newResource"      : "false",
           "validators"       : [ "nonempty", "datatype:${gYearDatatypeUriJson}" ],
           "optionsType"      : "UNDEFINED",
           "literalOptions"   : [ ],
           "predicateUri"     : "",
  
negative.code:         <v:input type="text" label="Position Title ${requiredHint}" id="positionTitle" size="30" />
          <v:input type="select" label="Position Type ${requiredHint}" id="positionType" />
  
          <v:input type="text" label="Start Year ${startYearRequiredHint} <span class='hint'>(YYYY)</span>" id="startYear" size="4" />   
          <v:input type="text" label="End Year <span class='hint'>(YYYY)</span>" id="endYear" size="4" />
      
      </div>
  