[OGo-Developer] Significance of PRINCIPAL_CLASS

[Adam Tauno Williams]

What is the significance of the "PRINCIPAL_CLASS" in the context of
something like a ZideStore bundle?  In all the bundles in the tree the
PRINCIPLE_CLASS seems to just descend from NSObject and implement
nothing.

I've create a "Hello World" ZideStore bundle for the sake of some
documentation,  and I can set the PRINCIPLE_CLASS to a NSObject child or
to the object that actually does the work,  it doesn't seem to have any
affect.

I've overloaded init and specified a logWithMessage,  and I never see
the message.  Is this class even instantiated?

-(id)init
{
  self = [super init];
  [self logWithFormat:@"object initialized"];
  return self;
}


Google, unfortunately hasn't helped much at all.