phoenix docs question

pdquestion

Are templates scoped to a controller by naming convention? And is that convention two layers deep 
and implemented with filenames?

First convention describes rules for a controller's filename; stipulating that Controller filenames
get two parts seperated by
an underscore. An application with these three controllers -- PageController, HelloController, and 
UserController -- should manifest the following file names:

controllers
  |- page_controller.ex
  |- hello_controller.ex
  |- user_controller.ex

The second layer completes the association between the Controller and their respective file names by 
stashing templates under a template subdirectory named after the first part of the controller name as 
follows below:

templates
  |- page
        | index.html.eex
        | file(1..n).html.eex
  |- hello
        | index.html.eex
        | file(1..n).html.eex
  |- user
        | index.html.eex
        | file(1..n).html.eex

phoenix-naming-rule.png