Apache Question:

A MultiViews search is enabled by the MultiViews Options.
If the server receives a request for /some/dir/foo and
/some/dir/foo does not exist, then the server reads the
directory looking for all files named foo.*, and effectively
fakes up a type map which names all those files, assigning
them the same media types and content-encodings it would
have if the client had asked for one of them by name. It
then chooses the best match to the client's requirements,
and returns that document.