Sections - continued

Generic (nested <section> tags):

<section>
     <section>
        <section>...</section>
	<section>
	   <section>
	      <section>...</section>
	      <section>...</section>
	   </section>
	   <section>...</section>
	</section>
     </section>
     <section>...</section>
  </section>
  <section>...</section>
  <section>...</section>

No theoretical limit on depth of nesting.