DOCBOOK-APPS: Sections only nesting

[Stuart Farnan <stuart at neoworks dot com>]

I have noticed that it is only possible to nest section elements in the XML
version of DocBook 4.1.2.  How do you go about breaking up an article into
multiple sections if they cannot follow one another?

for example, I want to have:

<section role="summary">
	<title>...</title>
	<para>
	....
	</para>
</section>
<section role="description">
	<title>...</title>
	<para>
	....
	</para>
</section>

But this generates an error.  Is there any way to section an
article/book/etc. into multiple parts but all at the same logical level?

Thanks,

Stuart