Did I miss one?

[size=small]bar[/size] (-->font-size: small), but actually this doesn't make a difference to the normal font size.

So I think I will implement these ones:
[size=small]foo[/size] --> font-size: x-small
[size=large]foo[/size] --> font-size: large
[size=huge]foo[/size] --> font-size: x-large

Still missing are [MARQUEE] and [BLINKING]!

Don't dare!
What do you think about super- and subscripts (HTML < sup > / < sub > ) ?

That's a better idea!

Alex