Re: Replaceable element for parameterising pages (was: Proposal for small enhancement)

First, I have to admit that I wasn't aware of the extent of the functionality of the XML entities. After reading the reply, I yahooed (I'm not googling :-) ) and found details.
But, HTML is not XML, so can I count on the same functionality in HTML? Do you have an example?

Thanks,
Sorin Schwimmer