Thanks for this. I tried to use < i > yesterday, and discovered it got swallowed up. Only after posting did I realize that I should have tried < em >.

@christopher
ul and dl are "container" HTML elements. That means they're designed to describe syntactically and encase other elements.
UL means unordered list and holds LI - list items. It doesn't hold text on it's own.
DL - same thing. Means definition list and holds dt and dd elements.
The comments parser that Typophile uses is just guessing at what to with the text within a UL or DL tag but yet outside of a LI or DT or DD tag.

Regards,
rich

So we have:

<dl>

Definition List

<dt>

Term being defined

<dd>

Definition of the term

The usage is something like:
<dl><dt>Term</dt><dd>Definition</dd><dt></dl>
—Joel