Newbie Question

[eluser]navetz[/eluser]
In the welcome_message.php view file there is this line:

<p><br />Page rendered in {elapsed_time} seconds</p>

Where does {elapsed_time} come from? I thought by default code igniter didn't load the template class. If it does I suppose elapsed_time comes from the benchmarking class.

Does that mean that both of these are loaded or are only loaded when called? Where are the classes loaded and how can you set things like this to happen for your own needs?