IEntityReference

EntityReference

    model when an entity reference is in the source document, or when the 
    user wishes to insert an entity reference. Note that character references 
    and references to predefined entities are considered to be expanded by 
    the HTML or XML processor so that characters are represented by their 
    Unicode equivalent rather than by an entity reference. Moreover, the XML 
    processor may completely expand references to entities while building the 
    structure model, instead of providing <pre><code class="lang-csharp">EntityReference</code></pre> 
    objects. If it does provide such objects, then for a given 
    <pre><code class="lang-csharp">EntityReference</code></pre> node, it may be that there is no 
    <pre><code class="lang-csharp">Entity</code></pre> node representing the referenced entity. If such an 
    <pre><code class="lang-csharp">Entity</code></pre> exists, then the subtree of the 
    <pre><code class="lang-csharp">EntityReference</code></pre> node is in general a copy of the 
    <pre><code class="lang-csharp">Entity</code></pre> node subtree. However, this may not be true when an 
    entity contains an unbound namespace prefix. In such a case, because the 
    namespace prefix resolution depends on where the entity reference is, the 
    descendants of the <pre><code class="lang-csharp">EntityReference</code></pre> node may be bound to 
    different namespace URIs.
    <p>As for <pre><code class="lang-csharp">Entity</code></pre> nodes, <pre><code class="lang-csharp">EntityReference</code></pre> nodes and 
    all their descendants are readonly.</p><p>See also the <a href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113">Document Object Model (DOM) Level 2 Core Specification</a>.</p>