Here's a statement:
5. para of
http://www.students.stedwards.edu/~cherbig/report.htm
"The scope of class variables is limited to the entire class that
created the variable and to any subclasses.  This feature has been
compared to the protected value of Java attributes (Hunt)."

> I've been puzzling over Ruby's treatment of class variables -- not so
> much the "what" as the "why".
> 
> It seems strange to me that a class somewhere off in one side of an
> inheritance tree can affect a class variable all over the tree.
-- 
Tobias Reif
http://www.pinkjuice.com/myDigitalProfile.xhtml

go_to('www.ruby-lang.org').get(ruby).play.create.have_fun