title: How to display icons next to a select1 control with xxforms:tree appearance
body: <p>I display a list of items via an <code>xforms:select1</code> control using the <code>xxforms:tree</code> appearance. They are displayed via a code block like:</p>
  
  <pre><code>&lt;xforms:select1 appearance="xxforms:tree" bind="retrievalControl-bind" id="retrievalControl-appSummary-control"&gt;
      &lt;xforms:itemset nodeset="instance('dataInstance')/*"&gt;
          &lt;xforms:label ref="fn:concat(./NAME,', ','ID: ',./ID)"/&gt;
          &lt;xforms:value ref="./ID"/&gt;
      &lt;/xforms:itemset&gt;
  &lt;/xforms:select1&gt;
  </code></pre>
  
  <p>I want to display two icons for each item on the same row as the item: one icon for deleting and one for editing that item, which would all invoke XPL with the item ID as the parameter.</p>
  
  <p>The question, how do I render those icons - does itemset support nested trigger elements?  If not, how do I go about achieving it (clicking on the item results in an action other than edit or delete, so cannot use that; can show delete/edit on the page shown when user clicks on the item, but want to save that one click if the user just wants to delete the item for example).</p>