title: Hierarchical data in StringTemplate
body: <p>I am trying to create a hierarchical document using StringTemplate.</p>
  
  <p>For example, a list of directories: </p>
  
  <pre><code>\alpha 
     \file1
     \file2
  \beta
     \file3
  \gamma
     \file4
     \file5
     \file6
  </code></pre>
  
  <p>Is this even possible with StringTemplate?</p>