Specify how to process the value of <code>source</code> attribute of <code>&lt;xs:appinfo&gt;</code> elements.
<p>
<u>Possible Choices</u>:
<p>
<i>"document as see-link"</i>
<dl><dd>
The value is documented in a section below appinfo text looking as the following:
<dl style="margin-bottom:0"><dd>
<b>See:</b>&nbsp; <i><u>&lt;source url link&gt;</u></i>
</dd></dl>
</dd></dl>

<i>"document as annotation title"</i>
<dl><dd>
The value is documented as a title printed before the text obtained from this <code>&lt;xs:appinfo&gt;</code> element.
</dd></dl>

<i>"include XML source"</i>
<dl><dd>
The value is interpreted as an URL of some XML file, which will be included (reproduced) in the documentation
below the appinfo text.
<p style="margin-top:10pt">
<b>Note:</b> Relative URLs are interpreted against the location of the XML schema file.
</dd></dl>

<i>"no processing"</i>
<dl style="margin-bottom:0"><dd>
The value of <code>source</code> attribute is not documented.
</dd></dl>