title: How do I select multiple sets of attributes within an XML document using XPath?
body: <p>I am having trouble constructing a single XPath statement to return two different sets of attributes.  </p>
  
  <p>For example take the following XML document:</p>
  
  <pre><code>&lt;root&gt;
   &lt;line name="one" alpha="a1" beta="b1"/&gt;
   &lt;line name="two" alpha="a2" beta="b2"/&gt;
   &lt;line name="three" alpha="a3" beta="b3"/&gt;
  &lt;/root&gt;
  </code></pre>
  
  <p>If I use the following XPath statement:</p>
  
  <pre><code>//@alpha
  </code></pre>
  
  <p>It yields the following attribute set:</p>
  
  <pre><code>alpha="a1"
  alpha="a2"
  alpha="a3"
  </code></pre>
  
  <p>What statement do I use to yield the following attribute set:</p>
  
  <pre><code>alpha="a1"
  alpha="a2"
  alpha="a3"
  beta="b1"
  beta="b2"
  beta="b3"
  </code></pre>