Here, I made it loop!
I gotta go to work now, so this was real quick. But this sounds like a nice way of making it.
http://www.gammabeam.net/constructstuff ... onloop.cap
I simply created period with the name "loop", and at the beggining of the this period, the timeline is restarted
edit**
Using the parameter 2 we could make it flip when choosing another direction, using "set width". I'm secretly working with this at work (shhhh) and I'll upload something soon... Either way, I guess we could move this thread to another section, as this is possibly no longer a Feature Request, but rather a test thing.
edit once more**
Flipping is done... Use the link above to see it.
Messing with construct is so much cooler than my job