A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZDG/current/Acquisition.stx#2-5
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and::
'c.a.aq_self is a'
% Anonymous User - May 25, 2003 12:13 pm:
Hmm. Mine isn't doing this. Here's some pasted output:
[snip]
AttributeError: color
>>> c.a.aq_parent is c
1
>>> c.a.aq_self is a
0