Mark wrote...
> but that didn't stop Netscape, Microsoft and others from creating their
>own "extensions" over the years.  Today's browsers are very forgiving and
>they just ignore elements they doesn't understand.

It was always my impression that the browsers are "forgiving" to provide
a kind of "graceful degradation" in HTML i.e. allow older browsers still
show some reasonable output when faced with newer HTML dialects. However,
I haven't visited www.anybrowser.org lately, so I might be somewhat "down
the garden path" on this HTML design feature.

Lars.