The second half of this page seems to be erroneously marked up as code, making it very difficult to make sense of:
This is already fixed in http://edgeguides.rubyonrails.org/initialization.html and will be fixed in http://guides.rubyonrails.org/initialization.html when Rails 3.1.1 is released.
Regards Vijay
Nevertheless, please take into account that the initialization guide remains unfinished, it is not complete, it has not been maintained (because it is not published)… so read at your own risk!