The Yield statement

[Alex Bryan]

Okay, so i don't really understand the Yield thing and i know it is  
useful. I've read a few things about it but it is all programming  
jargon and so basically it is hard for me to understand. So can anyone  
give me a description or link me to a site that has a good definition  
and/or examples of it? If you could I would really appreciate it. 
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