what's the hotkey to move a loop edge?

Question

I'm trying to move a loop edge on a sphere to make an eyeball. I'm able to select the loop edge but when I move it the sphere starts to lose shape which is not what I want. how do I move the loop edge across the sphere a tad without changing its shape. someone fill me in please

Answer 1

Its G G called loop slide. Click when done. G G is type the G key twice.