How Does $customfields Work?

[vb_guru]

I have moved $customfields around in the modifyprofile template within VB3 admin and then looked at the output on profile.php.

The thing that I do not understand is that it comes with its own formatting. For example I put $customfields[required] anywhere in the template and it comes out as showing the required custom fields for that user on the profile.php page. I then did a "view source within IE 6 and this $customfields[required] variable displays with tables and rows and columns.

Can someone explain to me where $customfields[required] is getting the formatting and how it is making a database call for just that user and putting that user's info in a nice table?

Thanks in advance.