[Zope] strange path "feature"

ok so I am quite new to Zope, and I am wondering if this is a feature or a bug (using the zope site as an example): http://www.zope.org/Documentation results in the Documents page http://www.zope.org/Resources results in the resources page, BUT so does: http://www.zope.org/Documentation/Resources Whether it is a feature or a bug, how can I stop it from doing that? (PS. If it is a feature, I would appreciate any sort of explanation as to what is happening to make this occur.) Many Thanks, Sachin