After AT LEAST 10 minutes on ChromeOS Tablet,
with "Wake Lock Status: "WakeLock is active!",
this demo IS STILL ON.
After 6 minutes (01:45 - 01:51) on ChromeOS Tablet,
with "Wake Lock Status: "WakeLock has been released.",
this demo goes to black.
The button below changes depending on whether wake lock is active or not.
N.B. works on ChromeOS Tablet but NOT on JOETHINKS or JOES-MAC-MINI
Wake lock will automatically release if if the tab becomes inactive.
To re-activate the wake lock automatically when the tab becomes active again, check this box: