Plone is not just a CMS. Since Plone is built on Zope, you can develop extensions as you would in Zope.
I'm no Plone expert, but our company chose Plone and my colleagues implemented custom functionality when needed. You will have to know how to integrate your new components (Zope Products) with Plone. good luck! Robert-Reinder -- _______________________________________________ Zope3-users mailing list Zope3firstname.lastname@example.org http://mail.zope.org/mailman/listinfo/zope3-users