<?xml version="1.0" encoding="iso-8859-1"?>
<?xml-stylesheet href="../make-menu.xsl" type="text/xsl"?><html>
   <head>
      <this-is section="expressions" page="boolean" subpage=""/>
      <!--
           Generated at 2010-10-29T18:20:48.427+01:00--><title>Saxonica: XSLT and XQuery Processing: Boolean expressions: AND and OR</title>
      <meta name="coverage" content="Worldwide"/>
      <meta name="copyright" content="Copyright Saxonica Ltd"/>
      <meta name="title"
            content="Saxonica: XSLT and XQuery Processing: Boolean expressions: AND and OR"/>
      <meta name="robots" content="noindex,nofollow"/>
      <link rel="stylesheet" href="../saxondocs.css" type="text/css"/>
   </head>
   <body class="main">
      <h1>Boolean expressions: AND and OR</h1>
      <p>The expression <code>E1 and E2</code> returns true if the <i>effective boolean values</i> of
<code>E1</code> and <code>E2</code> are both true.</p>
      <p>The expression <code>E1 or E2</code> returns true if the <i>effective boolean values</i> of
either or both of <code>E1</code> and <code>E2</code> are true.</p>
      <table width="100%">
         <tr>
            <td>
               <p align="right"><a class="nav" href="sequence.xml">Next</a></p>
            </td>
         </tr>
      </table>
   </body>
</html>