[Zope] Superuser, the owner, the logged in user and execution

Chris McDonough wrote:

See (sneak peek) http://www.zope.org/Members/mcdonc/PDG/6-1-Security.stx, section named "The Superuser".

No offence meant, but it doesn't do a very good job of explaining _why_ the superuser can't own anything. Come to thing of it, is there a concise description anywhere of what the new rules are WRT to ownership, the logged in user and how 'code' of all the various types is executed? cheers, Chris