[Zope-CMF] permissions and Zclasses

[deboute benjamin]

Hi,

I'd like to know where the default security settings for a ZClass are 
hidden : )

I have a CMF site, I created the ZClasses needed to cover my content needs.
Then I declared them in portal_type [ZMI]

My problem is that when a Member creates an object, default permissions are 
mapped on it.
In itself it is not a problem, but I NEED to alter those permissions.

I know that in a python product the security mappings are declared in the 
class, but I blindly didn't manage to find where those associated to 
ZClasses lie : [

Any idea anyone ?