📄 dtd_entities.asp@output=print
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<title>DTD Entities</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>DTD - Entities</h1>
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<p class="intro">Entities are variables used to define shortcuts to standard text
or special characters.</p>
<ul>
<li>
<p class="intro">Entity references are references to entities</p></li>
<li>
<p class="intro">Entities can be declared internal or external</p></li>
</ul>
<hr />
<h2>An Internal Entity Declaration
</h2>
<h3>Syntax</h3>
<table border="1" width="100%" class="ex" cellspacing="0" id="table1">
<tr>
<td width="100%">
<pre><!ENTITY entity-name "entity-value"></pre>
</td>
</tr>
</table>
<h3>Example</h3>
<table border="1" width="100%" class="ex" cellspacing="0">
<tr>
<td width="100%">
<pre>DTD Example:</pre>
<pre><!ENTITY writer "Donald Duck.">
<!ENTITY copyright "Copyright W3Schools."></pre>
<pre>XML example:</pre>
<pre><author>&writer;&copyright;</author></pre>
</td>
</tr>
</table>
<p><b>Note:</b> An entity has three parts: an ampersand (&), an entity name, and
a semicolon (;).</p>
<hr />
<h2>An External Entity Declaration</h2>
<h3>Syntax</h3>
<table border="1" width="100%" class="ex" cellspacing="0" id="table2">
<tr>
<td width="100%">
<pre><!ENTITY entity-name SYSTEM "URI/URL"></pre>
</td>
</tr>
</table>
<h3>Example</h3>
<table border="1" width="100%" class="ex" cellspacing="0">
<tr>
<td width="100%">
<pre>DTD Example:</pre>
<pre><!ENTITY writer SYSTEM "http://www.w3schools.com/entities.dtd">
<!ENTITY copyright SYSTEM "http://www.w3schools.com/entities.dtd"></pre>
<pre>XML example:</pre>
<pre><author>&writer;&copyright;</author></pre>
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</tr>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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