Templates

[eluser]Perkin5[/eluser]
I've been playing around with a template tutorial, one of the key steps in which is to grab the contents of a view and make it equal to a variable.

So say I have a view called contact_us.php.

Then in the controller I have a function to load the template including this:

Code:

&data;['content'] = 'contact_us';

To my amazement this works and the contents of contact_us.php view is loaded into $content.

My question is, how does Codeigniter know that I want to load the contents of that file and not the text contact_us ?