What does bbp_template_before_forums_loop do?

Hi,

I’m trying to change the area above the forum header (.bbp-header) in the loop_forums.php file and can’t seem to see what the line “<?php do_action( ‘bbp_template_before_forums_loop’ ); ?>” refers to to make the changes I need to make.

Can someone explain what this is doing and how I can make the changes?

Thanks

Gareth