[xml] Case preservation in libxml2

[GPN <gpn libxml gmail com>]

Hello,
I am using libxml2 (SAX Parser API's) to parse HTML/XML
content.
When my handlers get called back from the parser, the tags'
cases are converted to lower-case irresapective of what goes
in to the parser.
My questions are -
1. Do any applications care about the case?
2. Is there any way to preserve the case of tags and attributes,
   so that the handlers can write them in the original format?

Thanks and Best Regards,
GPN