//need two keyframes to loop
loopOut(type="cycle")
----
loopOut(type="pingpong")
----
loopOut(type="continue")
----
loopOut(type="offset")
and of course you can also use "In", so the loop happen before the keyframes, so it go'es like...
loopIn(type="cycle")
----
loopIn(type="pingpong")
----
loopIn(type="continue")
----
loopIn(type="offset")