Why would I ever use a Chain of Responsibility over a Decorator?

Question

I\'m just reading up on the Chain of Responsibility pattern and I\'m having trouble imagining a scenario when I would prefer its use over that of decorator.

What do

Answer 1

1. keyword 'extends' - static extension.
2. Decorator pattern - dynamic extension.
3. Chain Of Responsibility pattern - just processing of a command object with a set of processing objects and those objects don't know each other.