Htmltext: storing data in markup

[David Bovill]

Anyone got any suggestions / experience in using htmltext to store data /
metadata. Most of the time is strips out any additional tags you might add
(which is a great pity) - but I've found it useful to use markup like:

<a name="some thing you want to store">For this text</a>

Are there any other tags that can be used to markup text with metadata?