This module generates meta tags automatically from plenty of information through keyword variables like  (this keyword displays the product's name).
The keywords are named properly, so you will know what they are going to display.
Under every generator field, you can find the available keywords for the current field. Just click Show/Hide and the available keywords show up. If you click on the selected keyword, it will insert into the attached generator field at cursor position.
 
You are able to override the automatically generated meta tag by filling the desired content's meta field. E.g.: If you want to write a specific meta title to one of your products, navigate to the product edit section in the admin, click on the SEO tab and fill the meta fields. This is also useful when you have a large catalog and you don't want bad meta fields, the automatic generator creates good meta fields until you write even better manually. Because how the override working we implemented a maintenance tool which can clear meta fields. For a fresh start, we recommend to clear the meta fields.
 
We also implemented a product friendly url generator which can generate much more relevant urls than the built in version. This is also really useful when you use our Advanced SEO Friendly URLs module which removes the product id from the url, with this tool you can generate relevant but unique friendly urls which is required to the proper work. It generates the variable in the Preferences -> SEO & URLs -> Schema of URLs (panel) -> Route to products (input). So you won't need to add any other variables. IMPORTANT! For technical reason it can't be an automatic process, so you have to do this manually.