The x-ray firefox extension is pretty handy in figuring out the layout of a plone site. It displays the tags, the IDs and the classes inline, giving you a surprisingly good idea of what's happening behind the scenes.
I discovered it through a comment by Cillian on the firefox development tools on the Plone website. I've since updated that page :-)
My name is Reinout van Rees and I work a lot with Python (programming language) and Django (website framework). I live in The Netherlands and I'm happily married to Annie van Rees-Kooiman.
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