Also manual on one page : istrolid.com/p/panda3d/man/full.html
I would think its best to use more mark up in the manual rather then HTML.
I love the way django mark up for their documents works:
code.djangoproject.com/browser/django/trunk/docs
They use the reStructuredText ( python.org/dev/peps/pep-0012/)
basically the docs are text and look nice as text but can also be rendered into HTML or more.
Also using the wikimidea mark up is ok but not as good. Right now the manual uses html tags and wikimidea mark up language mixed in badly. (there is many closing tags missing)
As we are fixing the manual content it be nice to fix this problem too.