The snippet in the OP is from
AutoBar. I'm trying to fix an annoying bug. Popups that are supposed to pop up when they are moused over and pop down when the mouse leaves sometimes stay popped up. This snippet is part of code that is supposed to force them down after a time interval, but it doesn't appear to work.
Its hard to fix something when you don't understand it! I started looking at the code and found this "literal string" construct that I'd never seen before. I now find it odd that I can't find "loadstring" anywhere in the addon.
Thanks for the insight. I'll see if this new knowledge will get me any further along.