 packet is arranged so that the least sensitive portion of the
data comes last.</p>

<h3>Page header</h3>

<p>The headering mechanism is designed to avoid copying and re-assembly
of the packet data (ie, making the packet segmentation process a
logical one); the header can be generated directly from incoming
packet data. The encoder buffers packet data until it finishes a
complete page at which point it writes the header followed by the
buffered packet segments.</p>

<h4>capture_pattern</h4>

<p>A header beg