Please Help Me Understand...

[TyyWard]

Hello All,

I have a question that is probably basic for a lot of you, but I want to understand this. When I am working in any of the themes I come across php like this:

<?php _e("Home", 'studiopress'); ?>

or

<?php _e("Copyright", 'studiopress'); ?>

Can somebody explain to me what the 'studiopress' is accomplishing? Do I need to leave that or do I need to change it to the website I am designing? I have noticed this all throughout the themes and wasn't sure what it was doing. I started to change some of them in the footer then thought I better figure out what it is doing before I mess something up. So if someone can educate me on this, I would greatly appreciate it.

Thanks for the education!

Tyy