Often when you create a list, you will want to place a header on it that logically describes the contents, like this:
This makes good sense, and creaters a good structure of information on your page. But how should you do it?
In the HTML Level 1 textbook the answer is to use the lh tag. There is just one problem with this: There is no such tag! In fact, I cannot find any indication that this tag ever existed, though I am certain it did at one time. The list of elements at the W3C does not include it, the list of tags at Netscape's Developer's Edge does not list it. I checked all over Microsoft's Developers' Network Online and found nothing of it. I checked the Index.html site and not a mention could be found. This tag is so seriously gone that even the traces are gone.
What I think happened is that one of the browser companies introduced this tag in the hope that it would be picked up and made a part of HTML. Clearly, that did not happen. This tag is definitely not a part of the HTML world, and should not be used. Period.
Well, since having a header is a good idea, but the lh tag didn't make it, how should you put a header on a list? I think the answer has to be by using the tools you already have: the header tags h2...h6. You should not use h1 unless the list is the only thing on the page. h1 headers should always be used to describe the entire page. But h2...h6 are used to describe sections of a page, and a list can be a section just as much as anything else can be. When you do this, the header has to go before the list. The list tags cannot contain header tags. A good example is how I coded the list I used above as an example:
Note that the header comes first, then the list. This keeps your code neat, tidy, and compliant with the standards for HTML. But it still lets you create a good logical structure.