[Zope] Using ZClasses programmatically

[Frank Stephan]

Hi,

can anyone point me to a good ressource how I can handle ZClasses
programmatically.
I walked through 2 Zope books, but they almost only say something about
creating
and using ZClasses in the ZMI. What I need is information how I can use the
objects
in my code. Would Beehive's ZClasses Tutorial by a better point to start
off.

Is there a way to lookup an object by it's ID like ZODB.lookupObject(ID) to
get
an entry point für object access.

TIA
Frank