me="section-3" href="#section-3">3</a>. Detailed specification</span>

   3.1. Overall conventions In the diagrams below, a box like this:

         +---+
         |   | &lt;-- the vertical bars might be missing
         +---+

      represents one byte; a box like this:

         +==============+
         |              |
         +==============+

      represents a variable number of bytes.

      Bytes stored within a computer do not have a "bit order", since
      they are always treated as a unit.  Ho