Re: Beginner's problem with expandable list
Heading tags generally have white space added below them. For whatever heading you are using (h2, h3, etc.), you'll have to reduce the white space (margin) in the CSS file of the theme you're using.
This might have not have a good effect for other instances of the heading, though. Alternatively, you could give .link a negative top-margin (the plus/minus anchor is class="link"). I don't know where else a class="link" is used though, so there could be unwanted effects. To reduce the scope to the wiki page content, in the CSS file use something like .wikitext a.link {margin-top: -1em}.
-- Gary
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;){kind=link}