Redirect 410 /html5/core
RedirectMatch /html5/spec/$ http://dev.w3.org/html5/spec-LC/
RedirectMatch /html5/md/$ http://dev.w3.org/html5/md-LC/
RedirectMatch /html5/2dcontext/$ http://dev.w3.org/html5/2dcontext-LC/
RedirectMatch /html5/html-xhtml-author-guide/html-xhtml-authoring-guide.html http://dev.w3.org/html5/html-xhtml-author-guide/WD-html-polyglot-20110524.htm