Class variables not inherited?

[Paul Johnson]

When a class variable is declared in a the "m" file, before the
implementation line, it works fine.  In order to have that variable be
inherited by a subclass, what kind of declaration do I need in the "h"
file.  I know its not extern. In case this is unclear, here is a bit of
code

Agent.m:

#import "Agent.h"

World * worldForAgent;

@implementation Agent

+setWorld: (World *)aWorld;
{
  worldForAgent = aWorld;
  return self;
}

Works fine, but subclasses from Agent don't inherit the variable
worldForAgent.

-- 
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66045                FAX: (785) 864-5700

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