I have just started learning Ruby and I am going through as much 
documentation as I can find.  The only question that I cannot seem to 
find an answer to concerns the use of the # symbol when referring to 
methods (I think I've seen it used to refer to both class and instance 
methods).

Here is an example:
http://www.rubycentral.com/book/ref_c_io.html#IO.select

On the above page there is a link to "Kernel#select" which is a class 
method.

and here: 
http://www.rubycentral.com/book/ref_c_object.html#Object.is_a_qm

There is a link to "Object#kind_of?" which is an instance method. 
Clearly the purpose of the hash mark has another purpose.  Anyone know 
what document explains this?

Thanks!
Justin

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