How do I turn loop an animation

How should I do to make looping an animation?

I do not know where the button in the image editor to rotate in loop current animation of my items!

Certainly it is a small problem, but I happen to be really blind sometimes or not immediately see the thing to do when I turn to a new software.

Hi, select the animation , then look at the left panel, ther is an option LOOP , set it to yes, in that panel you can also change the speed and a ping-pong option

normal loop: frames 1,2,3,1,2,3,1,2,3

ping-pong loop: frames 1,2,3,2,1,2,3,2,1

Thanks, danuyos !