Visible grid lines would be great. It seems there is a 5x2 grid since you can use the Q-P keys on a QWERTY keyboard to access them. Q-T is the top 5 and Y-P is

Visible grid lines would be great. It seems there is a 5x2 grid since you can use the Q-P keys on a QWERTY keyboard to access them. Q-T is the top 5 and Y-P is the bottom 5. I found the keys to work much better for more accurate placement and timing.