Hey All, Thought I'd share this and see if anyone had any better ideas... So, I have a set of views that subclass each other, nothing out of the ordinary there. However, I also want the zpts used by the views to "subclass" each other, such that a subclassing view can use its parent's macro(s) and provide the same to be used further downstream. This is the only solution I can think of: from Products.Five.browser import BrowserView from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile class Base1(BrowserView): template = ViewPageTemplateFile('html/template1.html') class Base2(Base1): template = ViewPageTemplateFile('html/template2.html') parent = Base1 class Base3(Base2): template = ViewPageTemplateFile('html/template3.html') parent = Base2 class Concrete(Base3): def __call__(self): return self.template(self) template1.html: <metal:x define-macro="main"> <p>Template1</p> <metal:x define-slot="slot"/> </metal:x> template2.html: <tal:x define="parent nocall:view"> <metal:x define-macro="main" tal:define="parent nocall:parent/parent"> <metal:x use-macro="parent/template/macros/main"> <metal:x fill-slot="slot"> <p>Template2</p> <metal:x define-slot="slot"/> </metal:x> </metal:x> </metal:x> </tal:x> template3.html: <tal:x define="parent nocall:view"> <tal:x define="parent nocall:parent/parent"> <metal:x use-macro="parent/template/macros/main"> <metal:x fill-slot="slot"> <p>Template3</p> </metal:x> </metal:x> </tal:x> </tal:x> Can anyone think of a nicer way that doesn't involve the 'parent' attribute on the view classes and has (preferably much) nicer code in the zpts? cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk