lucy24 - 9:56 pm on Aug 8, 2012 (gmt 0)
Everything can be done in some way-- but there are limits to clunky workarounds.
For example, I have at different times coded sidenotes in three entirely different ways. (Using floats, absolute positioning or-- yes-- tables.) But none of them is a really good substitute for a built-in "side footnote" option in HTML. And I can fake up an imitation of a run-in header-- but the now-you-see-it-now-you-don't* CSS "display: run-in" is cleaner and more intuitive.
* Somewhere there has got to be a list of properties that were left out of 2.1 but mercifully restored in 3.