Andre Engels scribed:
At present the following characters are allowed in titles: [-,.()' &;%!?_0-9A-Za-z/:\x80-\xFF]
Please remove '&' from this list: links to a page with '&' in it do not go right; they go to just the part before the '&'. So a page with '&' in the title is for all practical purposes unreachable.
When it's in the form http://www.wikipedia.org/w/wiki.phtml?title=AT&T '&' doesn't work.
But these work: http://www.wikipedia.org/wiki/AT&T http://www.wikipedia.org/w/wiki.phtml?title=AT%26T