Epic Floor Design, although I'm not sure what the idea is. if laid with clear or glass tiles to see the design would be different, but to put black tiles over doesn't make any sense. I wonder if you get a magnifying glass to view the floor.
Now you can continue reading right where you left off! In my old age I usually need to back up a bit to get reoriented to whatever I'm reading. I don't think I'll run out to buy a book marker with a finger pointing at a specific word