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+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
+<title>Componentdef Task</title>
+</head>
+
+<body>
+
+<h2 id="componentdef">componentdef</h2>
+<h3>Description</h3>
+<p>Adds a component definition to the current project.  A component definition is the same as
+a <a href="typedef.html">typedef</a> except:</p>
+<ol>
+  <li>that it can only be used in other types or tasks that accept components (by having
+    an <code>add()</code> method).</li>
+  <li>multiple components may have the same name, provided they implement different interfaces.</li>
+</ol>
+<p>The purpose of this is to allow internal Apache Ant definitions to be made for tags
+like <samp>and</samp> or <samp>or</samp>.</p>
+
+<h3>Examples</h3>
+
+<p>Define two components with the same name <samp>or</samp>; one is a
+condition (see <a href="conditions.html">conditions</a>) and one is a
+selector (see <a href="../Types/selectors.html">selectors</a>).</p>
+<pre>
+&lt;componentdef name="or" onerror="ignore"
+              classname="com.apache.tools.ant.taskdefs.conditions.Or"/&gt;
+&lt;componentdef name="or" onerror="ignore"
+              classname="com.apache.tools.ant.types.resources.selectors.Or"/&gt;</pre>
+</body>
+</html>