Btw, I wanted to share one of the best apps for the tablet (or phone for that matter). On my homescreen you can see an app in the type right hand corner called Screen Off.
This app allows you to turn the display off by simply pressing the app.
Whenever, I get a new Android device (which is a lot), it's always the first app I download. It makes turning the display off, after use, so much easier than fumbling around the hardware looking & feeling for the power button.
I thought I'd share it, in case you are new Android, or were not aware it existed.