anchor.diff:  
   The generic one is based on exceptions, and consists in raising an unauthorized
   exception in case the request is considered unauthorized. The access rules
  -system is based on some kind of rules attached to the handler or an _URI_ and 
  +system is based on some kind of rules attached to the handler or an _URI_ and
   that rules determine if a request is authorized or not.
   
   
  
positive.code: [options="header"]
  |================================================
  | Backend name | Namespace
  | Http Basic   | `buddy.auth.backends/http-basic`
  | Session      | `buddy.auth.backends/session`
  | Token        | `buddy.auth.backends/token`
  | JWS Token    | `buddy.auth.backends/jws`
  | JWE Token    | `buddy.auth.backends/jwe`
  |================================================
  
  If you are not happy with the built-in backends, you can implement your own and
  
negative.code: You can see a complete example of using this backend <<example-token,here>>.
  
  
  ==== Signed JWT
  
  Is a backend that uses signed and self contained tokens to authenticate the user.
  
  