how do i access require($body_code) found in tpl_main_page.php?

[tcarden]

Hey Everyone,
i have my homepage set to display main Categories (images/text) in the Center column. but when looking at tpl_main_page.php file, i think the code is coming from require($body_code);

what php file does that come from? i want to add a span tag to the category name link text.

thanks!

thanks for all the great help today.