title: Set default YML values
body: <p>I have a yaml file with a number of entries of the form</p>
  
  <pre><code>item1:
    name: item1
    stem: item1
  
  items2:
    name: item2
    stem: item2
  </code></pre>
  
  <p>Is there a way to DRY this up since the information for each record follows the same form?</p>
  
  <p>I'd like to specify somehow that whatever I make the name of the entry, it should also be used for the name and stem.</p>
  
  <p>I know that I can tag entries with <code>&amp;tag</code> and reference them in other entries with <code>&lt;&lt;: *tag</code> but that's for the actual content and not the form.</p>