Hi Eric, it handles Categories, Products, Manufacturers, Static Pages, and arbitrary urls (i.e. - you can rewrite help.php?section=faq, for example)
Only URLs are editable right now, and are handled on the add/modify pages in X-Cart admin for Categories, Products, etc.
A central interface will be complete soon, within the X-Cart administration, that will allow you to address all urls at once. So there will be 2 routes to modifying XCSEO-related settings per entry.
Once I get the new update ready, I'll post screenshots
Cheers