As far as I know, none of the commercial CMS stacks can. It’s a big misconception that buying one of these stacks will suddenly transform RapidWeaver into a true CMS like WordPress, Drupal, Concrete 5 et al. They don’t. What they allow (through the use of short codes and .htaccess rewrites) is to make it possible to edit regions on existing RapidWeaver pages.
Once I realized that what all these commercial CMS stacks were functionally doing was the same thing that could already be done for free just using simple includes (<?php require ‘…/includes/example.php’ ; ?> ) the novelty quickly wore off.