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You use the print dialog of your browser. Every browser has a menu option somewhere to invoke it. Most of the times it can also be called by pressing Ctrl+P. There you can adjust the size to print and other settings. You'll have to do this three times if you want to print all templates, since it only prints the one currently visible. Most browsers allow printing to a PDF file instead of a real printer as well, so you could use that if you want to save your design to your hard drive.