rails/info/properties

hi i had a doubt while creating a new rails project we are getting the basic welcome message as

Welcome aboard You’re riding Ruby on Rails! About your application’s environment

on clicking the about ur applications we are getting the full information about the gem version,rails path etc.I have checked the index.html file.its calling prototype js with function

function about() {         if (Element.empty('about-content')) {           new Ajax.Updater('about-content', 'rails/info/properties', {             method: 'get',             onFailure: function() {Element.classNames('about-content').add('failure')},             onComplete: function() {new Effect.BlindDown('about-content', {duration: 0.25})}           });         } else {           new Effect[Element.visible('about-content') ?             'BlindUp' : 'BlindDown']('about-content', {duration: 0.25});         }       }

how it is retrieving the information from rails/info/properties

Thanks in advance

how it is retrieving the information from rails/info/properties

There is a magic controller inside rails itself which is only
available if the development environment.

Fred