This parameter allows you to control how XML schemas are sorted throughout 
the documentation.
<p>
It directly affects:
<ol>
<li>
  The order in which XML schemas are listed in the <i>Overview Frame</i>
  (see also <i>"Navigation | Overview Frame"</i> parameter).
</li>
<li style="margin-top:10pt">
  In the case of <b>framed documentation</b> 
  (generated by <code>FramedDoc.tpl</code> main template),
  the order in which XML schemas become fully documented
  (which includes the generation of the <i>Schema Components</i> and <i>Schema Overview</i>
  pages for a schema).
  <p style="margin-top:10pt">
  That determines which XML schema gets documented the first,
  which, in turn, may affect the initial content of the frames:
  <ul>
    <li><i>List Frame</i>. (See parameter: <i>"Navigation | List Frame"</i>)</li>
    <li><i>Detail Frame</i>. (See parameter: <i>"Navigation | Detail Frame"</i>)</li>
  </ul>
</li>
<li>
  In the case of <b>single file documentation</b> 
  (generated by <code>SingleDoc.tpl</code> main template),
  the order in which the <i>Schema Overview</i> blocks
  (generated for each XML schema) follow in the file.
</li>
</ol>

Additionally, this parameter provides the default values of other parameters:
<ul>
  <li><i>Details | Overview Summary | Schema Summary | Sorting</i></li>
  <li><i>Details | Namespace Overview | Schema Summary | Sorting</i></li>
</ul>
which control the sorting of XML schema summaries.
<p>
The parameter has the following meaning:
<ul>
<li>
  When it is selected (<b><code>true</code></b>),
  the XML schemas will be sorted alphabetically by their file names (ignoring letter case).
</li>
<li style="margin-top:10pt">
  When the parameter is unselected (<b><code>false</code></b>),
  the XML schemas will follow in a certain "physical" order,
  which is determined by how the initial XML schemas (to be documented) have been specified
  as well as how these schemas import other XML schemas.
  <p style="margin-top:10pt">
  For more information about this, see also <i>"Generate Details | For schemas"</i> parameter group.
</li>
</ul>