Wes Gamble schrieb:
> I looked all over the Pickaxe reference to find it but I couldn't it.
> 
> I guess the "basic" operators are not documented, even when they're 
> overridden in clever ways?

Wes, you have to know that "Class" is a subclass of "Module", and so it 
inherits all methods from "Module", among them the method "<". See

 
http://phrogz.net/ProgrammingRuby/ref_c_module.html#Module._lt_cm_lt_eq_cm_lt_cm_lt_eq

The text says:

   One module is considered greater than another if it is included in
   *(or is a parent class of)* the other module.

Regards,
Pit