The add-on lets each category of products on pages with single filter-value (selected one filter value for "brand\manufacturer" type) have its own header, description, title, meta-description, keywords...
For the extended (brand) filters seo-url is formed. As a result, site's visitor can receive some extra information about requierments he's interested in, as well as the owner of the site receives seo-optimized for particular request pages.
Compatible CS-Cart v4.1.x, 4.2.x, 4.3.2+
In settings of add-on you should point that filters, for which you can point your own descriptions etc. Also there is a checkbox: modify url only for "filled" values of filters.
In category page on tab "Modules" you can set your own descriptions for the chosen values of filter.
You can use "$parent" code for paste the appropriate values on default. For example, there are some keywords are set for a category: key1, key2, key3. If for filter value of this category keywords are set as a string:"key0, $parent, key4", as a result on filter page we'll have: "key0, key1, key2, key3, key4".