Ah. I didn't have time to read beyond the Wikipedia article (I was getting distracted from what I was supposed to be doing as it was). I wouldn't be surprised if the article got confused or misled. With this sort of stuff it can be very easy to see one or two examples of something and think it must be common.
I don't expect to use an asterism for scene breaks, but now I know the word I'm sure to find somewhere where I can use one just so I can point it out to people.
