[Zope] www.zope.org doesn't support reget

An annoyance I noticed way back when I tried to download Zope 1.9.0: www.zope.org (and therefore Zope ?) doesn't seem to support the HTTP Range header, i.e. a reget (wget -c) for an interrupted download didn't work. Is this known, is this intended, is this still true, and will/can it be fixed in the future ? Gregor