You simply poke the bottom half of the screen with your finger to move forward one page.

She poked him in the chest with her finger a few times.

He'd also taken to poking one of them in the arm with his finger anytime anyone said the word "Untouchable."

He poked the table repeatedly with his finger, making a point.

"You go through many days of poking them with your finger," she explained.

I poked him in the chest with my finger.

Then, after a long moment, she took a sudden step forward and poked my arm with her finger.

He poked it a couple times with his finger.

She poked him in the chest with her finger, emphasizing her words.

I raised up a little and poked it with my finger.