Every Yahoo! Store is built using templates. Templates are programs written in Yahoo! Store’s proprietary programming language, RTML. While it is not possible to modify the built-in templates, you can make copies of those built-in templates, and then change them as needed. The following describes how to go about copying the built-in templates and begin using the copies instead of the originals. To begin, log into the Store Manager and edit your store in Advanced Mode. Once in Advanced Mode, click the Templates button. You will see a table with two columns listing all the built-in templates. If your store…