What is "move back and forth"

Usage examples of "move back and forth".

It wouldn't be nearly as comfortable as indoors, but there would be food and beverage service at card tables, and those customers who still couldn't settle on one event or the other might move back and forth, if it suited them, between the Dance of the Seven Veils and the Super Bowl.

However these beings travel very fast and remain in no one place for any given length of time, and indeed seem more than content to move back and forth across the length and breadth of Europe ceaselessly.

The face would move back and forth in negation, and then the door would shut.

Longarm began to move back and forth in the valley between her breasts.

Caswell's musical voice and watch her move back and forth through the room.