Is there any way to have digital watercolor not dry when closing a file? I tend to never have a solid block of time to work, so I never finish a piece I start on right away. But with the digital watercolor (which I love) I end up having to not close whatever picture I'm working on, sometimes for days. Don't like leaving a pic up for days on end . Plus if the computer crashes, or freezes while using another app, then it's dried anyway.