<snip confusion about the value of orphan attribute>
The default value is 3. The online help will be updated in the next Zope release.
I know we've covered this before, but the default value *should* be 0. With this question having popped up so many times in the last year plus, I'm not sure why ZC hasn't changed it. I noticed that this request is now "Pending" in collector #2468. If votes count for anything, I vote for zero.
At the risk of adding unecessary noise to the list: Me too. I can't see how changing this will actually break anything, though it may mess up some layout. It's so counterintuitive, it's like being given a bike to ride and then somebody telling you after two hours of you falling off, 'oh yeah, you can't ride it *forwards*, unless you press this switch under the mudguard.' At least, that's how I felt about it the first time I spent a day trying to work out what was going on. seb