m.</li>
</ol>

<h2>Logical and Physical Bitstreams</h2>

<p>A <em>logical</em> Ogg bitstream is a contiguous stream of
sequential pages belonging only to the logical bitstream. A
<em>physical</em> Ogg bitstream is constructed from one or more
than one logical Ogg bitstream (the simplest physical bitstream
is simply a single logical bitstream). We describe below the exact
formatting of an Ogg logical bitstream. Combining logical
bitstreams into more complex physical bitstreams is described in the
<a href="og