Allegro Serve - xhtml compliant code

Hello:

I recently downloaded the Allegro Server and after going through the
tutorials and examples my impression is that of an excellent example of
practical  LISP programming. I'm really looking forward to study the code
more closely.
My current LISP skills are limited although I've worked with html and
dynamic webpages for several years. One thing about the Allegro Serve
project stroke me: Everything, protocols etc. seems to be up to date,
nevertheless the htmlgen produces html syntax which is not compliant with
XHTML 1.0 version, by generating attribute names in upper-case and
unterminated empty elements like <br> and <img>. Is there any particular
reason for this disposition?
My guess is that it should be relatively easy to correct the output syntax,
furthermore the required syntax for XHTML (lower-case and terminated empty
elements like <br /> does not exclude a correct code generation in HTLM4.1 .
Could anybody (maybe the authors) please give me a hint on how (and where)
to correct the lisp code for output generation in order to able to generate
XHTML compliant code?

Thank you
Poul Pock-Steen
[email protected]