Specifies whether to generate the <b><i>List of Direct Subtypes</i></b>.
<p>
This list is generated for each Simple/Complex Type Component. It shows all other type components that are directly derived from the given type component. 
<p>
(A type is considered to be <i>directly derived</i> from the given type, when its definition contains an explicit reference to the given type).
<p>
<b>Applies To:</b>
<ul>
<li>Simple Types</li>
<li>Complex Types</li>
</ul>