'Node' hash in Chef recipes

On http://docs.engineyard.com/custom-chef-recipes.html, it would be useful if readers saw the keys in the 'node' hash that is available to every recipe. The Deploy Hooks API page (http://docs.engineyard.com/deploy_hooks_api.html) already has a section on how to obtain it:

"node(): Various information about the current instance and other instances in the environment. See /etc/chef/dna.json on an instance for an example of what node will return."

But for the sake of convenience, it would be nice if you had a reference page listing out all of the keys in dna.json.