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		<h1>Open Power Template 2.0</h1>
		<h2>opt:tag</h2>
		<p class="generated">@ 02.09.2010</p>
		<p class="location"><a href="index.html"><strong>User manual</strong></a> &raquo; <a href="syntax.html">Template syntax</a> &raquo; <a href="syntax.instructions.html">Instructions</a> &raquo; <a href="syntax.instructions.tag.html">opt:tag</a></p>
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	<div id="content"><dl class="location"><dt><a href="syntax.instructions.html">3.7. Instructions</a><br/>3.7.24. opt:tag</dt><dd class="prev">3.7.23. opt:snippet<br/><a href="syntax.instructions.snippet.html">&laquo; Previous</a></dd><dd class="next">3.7.25. opt:tree<br/><a href="syntax.instructions.tree.html">Next &raquo;</a></dd></dl>	<h1>3.7.24. opt:tag</h1><p><code>opt:tag</code> allows to create a tag with a dynamically generated name:</p>

<table>
<thead>
<tr>
  <th>Name</th>
  <th>Type</th>
  <th>Required?</th>
  <th align="left">Description</th>
</tr>
</thead>
<tbody>
<tr>
  <td>name</td>
  <td>Expression</td>
  <td>Yes</td>
  <td align="left">The tag name</td>
</tr>
<tr>
  <td>single</td>
  <td>Option</td>
  <td>No</td>
  <td align="left">If set to "no" (the default value), OPT shortens the tag to the single form: <code>&lt;tag /&gt;</code> only if the same form is used in the template. "yes" shortens the tag also if its content is built from white characters.</td>
</tr>
<tr>
  <td>ns</td>
  <td>Expression</td>
  <td>No</td>
  <td align="left">Tag namespace</td>
</tr>
</tbody>
</table>

<p>With <code>opt:attribute</code> you may add the <code>name</code> and <code>single</code> attributes to the new tag, so that they could not be parsed by OPT:</p>

<pre class="xml"><span style="color: #009900;"><span style="color: #000000; font-weight: bold;">&lt;opt:tag</span> <span style="color: #000066;">name</span>=<span style="color: #ff0000;">&quot;$tagName&quot;</span> <span style="color: #000066;">id</span>=<span style="color: #ff0000;">&quot;$id&quot;</span><span style="color: #000000; font-weight: bold;">&gt;</span></span>
    <span style="color: #009900;"><span style="color: #000000; font-weight: bold;">&lt;opt:attribute</span> <span style="color: #000066;">str:name</span>=<span style="color: #ff0000;">&quot;name&quot;</span> <span style="color: #000066;">str:value</span>=<span style="color: #ff0000;">&quot;foo&quot;</span><span style="color: #000000; font-weight: bold;">/&gt;</span></span>
&nbsp;
    Some content
&nbsp;
<span style="color: #009900;"><span style="color: #000000; font-weight: bold;">&lt;/opt:tag<span style="color: #000000; font-weight: bold;">&gt;</span></span></span></pre>

<p>A sample result:</p>

<pre class="xml"><span style="color: #009900;"><span style="color: #000000; font-weight: bold;">&lt;abc</span> <span style="color: #000066;">name</span>=<span style="color: #ff0000;">&quot;foo&quot;</span> <span style="color: #000066;">id</span>=<span style="color: #ff0000;">&quot;bar&quot;</span><span style="color: #000000; font-weight: bold;">&gt;</span></span>
    Some content
<span style="color: #009900;"><span style="color: #000000; font-weight: bold;">&lt;/abc<span style="color: #000000; font-weight: bold;">&gt;</span></span></span></pre>

<p>If the attribute <code>ns</code> is not set, the namespace may be defined by the <code>name</code> attribute. The <code>ns</code> attribute allows to do this dynamically - if the value is empty, the separating colon is not printed.</p>

<blockquote class="important">
  <p><code>opt:tag</code> cannot create dynamically the OPT instruction tags, because it is processed during the execution, not compilation of the template. If we try to give the tag the name <code>opt:section</code>, it will simply appear in the output.</p>
</blockquote>
<h4>See also:</h4><ul><li><a href="syntax.instructions.attribute.html">3.7.1. opt:attribute</a></li><li><a href="syntax.attributes.single.html">3.8.10. opt:single</a></li></ul><dl class="location location-bottom"><dt>3.7.24. opt:tag<br/><a href="syntax.instructions.html">3.7. Instructions</a></dt><dd class="prev"><a href="syntax.instructions.snippet.html">&laquo; Previous</a><br/>3.7.23. opt:snippet</dd><dd class="next"><a href="syntax.instructions.tree.html">Next &raquo;</a><br/>3.7.25. opt:tree</dd></dl>		</div>
	
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