[Zope3-Users] missing some tabs in the ZMI

[Andrea Ratto]

Hello, I am learning Zope 3, following the well known book "Web
Component Development with Zope 3". 

It mentions and shows an "Interface Browse" tab in the ZMI, under /++etc
++site, that I don't have in my instance, along with some other tabs
like "Tasks" or "Services". Am I missing some configuration or perhaps
something changed with newer zope versions?

I have devmode on in my zope.conf.

Thanks.