http://osdir.com/Article199.phtml"Runyan: Zope's CMF (Content Management Framework) was a pretty interesting piece of software, like most Zope software, but it lacked a functional interface. It was made for people to customize, but most opensource developers don't care about looks only about functionality. So we started off making a skin on top of the CMF. Shortly after doing work we realized that we would need to add lots of functionality to CMF because it had many short-comings; after all it is a framework not a product. Basically, Plone and the CMF attempts to address some issues Zope has had for years."
