Actually, there IS a Print button, but you have to click Print Preview to see it!  Once you're in Print Preview mode, the Print Preview button changes to Print.

Print Preview lets you see exactly what your printed document will look like before you print it. If it's perfect, you can click Print and move ahead.

However, if you spot an error or a formatting glitch, you have a second chance to back up and correct it without wasting a piece of your good stationery!