Page library

[eluser]anthrotech[/eluser]
What is the difference of this approach versus putting vars in a language file?

I've put all my metadata variables in a custom language file and called the objects via:

$this->lang->line('some_var')

<?=$this->lang->line('some_var')?>

in my header.php file

Just curious...I am sure it's "Six One Way, Half a Dozen Another" type of thing. But I've only begun using CI, so I am curious to find out "best practices."