What Types of Foods Do Anorexics Eat?

And what foods do they avoid? I know some avoid fatty foods, but I heard some live off it, so they won't binge. I also heard they rely more on how many calories are in foods, rather than fat? Can someone help me, I need the correct information for homework??
Update: I know that not all anorexics starve themselves, that's at the worst stage. I'm talking about when they are actually eating?
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