What's the purpose of a Pause Animation button on a loading animation?

1. How do I pause an animation in Chrome?

How do I pause an animation in Chrome?

Inside the Developer Tools, under the tabs "Styles", "Computed", "Event Listeners", etc, you can see at the right a play button inside a circle. If you click it, a slider bar will appear with which you can set the animation speed, and at the left of that slider bar, there's a pause button.