$this->load->view() ???

[eluser]CI_[/eluser]
I'm totally new to php and OOP specially in CI framework sorry for askin a stupid question like this but right now im totally mess-up... While im watching the Hello world tutorial i saw these functions... where did he get those??? were they from CI defined functions?

-------------------------------------------
<?php

class Blog extends Controller {

function index()
{
$this->load->view('blog_view');
}
}

?>
--------------------------------------------
thank you very much...