helpers function

[eluser]deamra[/eluser]
i have some question, pls if you think tell me quickly. before that, thanks for help me ^^
" i have template CSS, i confess about fuse CSS with CI, do you know
$this->load->helper('url'); ? ---> ('url') whats that?
and
Auto-loading Helpers
(If you find that you need a particular helper globally throughout your application, you can tell CodeIgniter to auto-load it during system initialization. This is done by opening the application/config/autoload.php file and adding the helper to the autoload array.) ---> in User Guide.
Can you explain me about that? "

thanks and keep coding