Adding a robots.txt file to your websites is handy thing to do. To do it is really simple: You just create the file in a text editor and drop it at the root of your site using FTP. Some Rapidweaver users though are not comfortable using FTP and worry if they're creating the file correctly in a text editor. So here is a way to create and publish the file entirely within Rapidweaver.
Rapidcart Pro doesn't not have an in-build way to add stacks to the product listings. If you want to add a button, say to link to something or open a reveal, you have use a code snippet. Here is such a snippet to launch a Foundation Reveal.