WordPress MU

In the Blog Settings of an individual blog, there is an option for "Advanced Edit". The default value appears to be 0. I have changed this to 1 to see what it did, but have noticed nothing different. Does anyone know what the heck this even does?
Thanks
Ed

I think it used to turn on an off the advanced edit form back in WPv1.5. I don't think it does a thing anymore, WP or WPMU. I didn't find it in the code outside the schema.php. Don't know why it is still there.

http://core.trac.wordpress.org/browser/tags/1.5.2/wp-admin/post.php

if (get_settings('advanced_edit')) {
734	                        include('edit-form-advanced.php');
735	                } else {
736	                        include('edit-form.php');
737	                }