The URL http://www.x.org/docs/XProtocol/proto.pdf still contains the old "Release 6.7" version of the "XWindow System Protocol" specification, however this is out of date as there have been substantial changes to Appendix A (keysyms) in the subsequent Release 6.9/7.0. Please keep the above URL automatically updated to the latest released version of the X11 specification.
Adding missing QA contact
A newer version has been posted at: http://www.x.org/releases/X11R7.5/doc/index.html but we do need to update the copies on www.x.org/docs
Suggestion: assuming you use Apache, add to http://www.x.org/docs/.htaccess the lines Redirect temp /docs/XProtocol/ http://www.x.org/releases/current/doc/x11proto/ etc. and to http://www.x.org/releases/.htaccess the single line Redirect temp /releases/current/ http://www.x.org/releases/X11R7.5/ which will need updating at each release. This way, the old links will continue to link to the latest version, and people can in future easily link to e.g. http://www.x.org/releases/current/doc/x11proto/proto.pdf to get http://www.x.org/releases/X11R7.5/doc/x11proto/proto.html or whatever the latest version is. (Using a "temporary" HTTP redirect is important here, because this way a linkchecker won't complain that our web pages contain out of date URLs if it finds this redirect.) And then provide an index page that uses the "/releases/current/" link, such that people can easily copy out release-independent URLs. Note: I see that you do already have apparently an (out of date!) symlink from http://www.x.org/releases/current/ to http://www.x.org/releases/X11R7.4/ Symlinks are a bad idea on the web as they create two URLs for the same page in search engines. Better use HTTP redirects to achieve the same effect!
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