Specify whether to document <b><code>'blockDefault'</code></b> attribute of the schema
(<code>&lt;xs:schema&gt;</code> element).
<p>
This attribute specifies the default value of <code>'block'</code> attribute of
<code>&lt;xs:element&gt;</code> and <code>&lt;xs:complexType&gt;</code> elements defined in the schema.
<p>
<b>Nested Parameter Group:</b>
<dl><dd>
Specify how to document the <code>'blockDefault'</code> attribute value.
</dd></dl>