t these messages may sometimes flag code that is currently correct and
that this may be annoying to some programmers.  However, this example illustrates
my view that these messages are useful and that any such annoyance is small price to
pay to avoid particularly vexing programming errors.

</dd>

<dt><h2><a name="pointer_level">pointer_level</a> - warning</h2></dt>
<dd>
This trap addresses the following situaion when serializing 
a pointer:
<ul>
<li>A type doesn't save class information in the
archive. Tha