title: Can I use 'and' operator in xsl for-each?
body: <p>Simply can I execute the following in xsl?</p>
  
  <pre><code> &lt;xsl:for-each select="trip/instance[.!=''] and trip/result[.!='']"&gt;
   &lt;/xsl:for-each&gt;
  </code></pre>
  
  <p>Q: When I use select="" in for-each does it change the scope of my selector for the code I use inside for-each?</p>