XOM API for Processing XML with Java

[Michael Kay <mike AT saxonica.com>]

> 
> I guess I'll be transforming everything to U+FFFD.
> 

If there's a strong need to support non-XML characters and they occur only 
occasionally, then using processing instructions can be a handy solution 
because it doesn't affect content without such characters, and doesn't get in 
the way of validation:

<a>Some text with <?U FFFD?> special characters</a>

Michael Kay
Saxonica