Sections

DocBook contains sections that can be nested.

Either of two styles, specific (<sect1-5>):

<sect1>
     <sect2>
        <sect3>...</sect3>
	<sect3>
	   <sect4>
	      <sect5>...</sect5>
	      <sect5>...</sect5>
	   </sect4>
	   <sect4>...</sect4>
	</sect3>
     </sect2>
     <sect2>...</sect2>
  </sect1>
  <sect1>...</sect1>
  <sect1>...</sect1>