title: How do I clear only a few specific objects from the workspace?
body: <p>I would like to remove some data from the workspace. I know the "Clear All" button will remove all data. However, I would like to remove just certain data.</p>
  
  <p>For example, I have these data frames in the data section:</p>
  
  <pre><code>data
  data_1
  data_2
  data_3
  </code></pre>
  
  <p>I would like to remove <code>data_1</code>, <code>data_2</code> and <code>data_3</code>, while keeping <code>data</code>.</p>
  
  <p>I tried <code>data_1 &lt;- data_2 &lt;- data_3 &lt;- NULL</code>, which does remove the data (I think), but still keeps it in the workspace area, so it is not fully what I would like to do.</p>