This mode gives you a way to quickly control basic digital inputs and ouputs. You are given a menu of all the pins that are available and you can set the direction and logic level. For some pins, you may also have PWM output & analog inputs! You can do quite a bit just with this method of control
• Each row in the table represents a pin on your Arduino. Pin name and current state are displayed on the left side of the cell, while pin value is displayed on the right.
• Tap a row to change the relevant pin's current mode and value.
• Tap the row a second time to hide its controls
Read through the Wiring, Configuration and Usage pages for more details