anchor.diff:  [source,ruby]
   ----
   get '/' do
  -  'something'
  +  'The body returned to the HTTP client making the request.'
   end
   ----
   
  
positive.code: [source,ruby]
  ----
  get do
    'something'
  end
  ----
  
  
negative.code: * `env`: a `Hash`, http://www.rubydoc.info/github/rack/rack/master/file/SPEC#The_Environment[a Rack environment].
  * `request`: a http://www.rubydoc.info/gems/rack/Rack/Request[`Rack::Request`].
  * `response`: a http://www.rubydoc.info/gems/rack/Rack/Response[`Rack::Response`].
  * `my`: a `Hash` which stores route variables. See <<routes-with-variables>> for a usage example.
  
  [[routes-with-variables]]
  === Routes with variables
  
  [source,ruby]
  ----
  