RE: adding addressing capabilities to the DOM

> SAX events (I'm really unclear about how a query interface for SAX would
> work--sounds more like a filter than a query), etc.
>

Image passing a location path expression to the SAX processor when calling
parse:

parser.parse("/descendant::invoice/lineitem[@price > 50]");

...and the processor only calls back into your application on the
information items that match the expression. This would greatly simplify
processing at the application level in SAX.

-aaron