Newbie structure Q: was Re: Structure/Schema - Custom or off the shelf?

[Steve Rickaby]

At 6:08 am +1100 3/2/06, mcarr at allette.com.au wrote:

>DocBook is a worthless bucket of elements. Sorry. I had a look yesterday
>and quickly found two examples that were enough to reconfirm my opinion.
>The first was that footnotes can contain paras that can contain footnotes,
>so you could have bottomlessly recursive nested footnotes.

That reminds me of something I meant to find out. How can you limit the nesting depth of elements to a value other than zero?
-- 
Steve