Added a rend="proof_only" attribute to the root element of two articles that still aren't proofed, and set up the XQuery pages that create lists of content so that they hide any items with a rend attribute (of any value). This keeps unproofed articles from casual readers, although they're still accessible by direct URL. I need to create a page which lists only these items, so John can do his proofing from there. This is not protected in any way; it's just not linked from the menu. We may add protection at some point if it's required.