This way a single animation won't constantly swallow processor time. I noticed that for multiple repeating animation files, hitting STOP once may not be enough. After hitting STOP, it was grayed then became available again as animation started up again. This may have just be odd timing, but it has seemed to happen a few times. 2.0Betas up to b6 also have a major bug with printing.
Continuous animations causes the printing process to go into loops that it never came out of.
This is the reason I did not use continuous animations on any of the tutorial pages. Beta 6 fixed this problem. That is everything that affects animated GIFs. I will amend this as I find more. Future additions will also be isolated on an addendum pages so people can find all the new info on a single page.