I have AR on both my desk top and my iPad. On the desktop you pick your resolution when you choose your paint size. Can this be done on the iPad/tablet ? I was thinking about printing some work I have done, the printing place wants to know what resolution I will use and prefers 300 dpi not the 72 dpi used for internet. So, is 72dpi a tablet resolution ONLY ? Or can I do 300 dpi?