title: extending href programmatically in typo3
body: <p>What's the best way to extend the attribute href programmatically in Typo3?</p>
  
  <p>The links were setted by RTE like</p>
  
  <pre><code>&lt;a class="download" target="_blank" href="fileadmin/ablage/test_material/pdf_1.pdf"&gt;
  </code></pre>
  
  <p>and shall be changed to</p>
  
  <pre><code>&lt;a class="download" target="_blank" href="fileadmin/ablage/test_material/pdf_1.pdf#zoom=100"&gt;
  </code></pre>