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Article:
  Networking in Cocoa
Subject:   completed project controller modularity?
Date:   2003-11-20 02:34:28
From:   anonymous2
Response to: completed project controller modularity?

Not a protocol. It's called a Category. It's basically a way of extending classes. It's usually used with classes you don't have the source to but want to extend, but in this case it's simply a way of compartmentalizing the methods.