[Willow starts to browse the shelves thoughtfully, looking for something that might be useful. It's good to be able to throw herself into something helpful, to get her mind off her current problems.]

Huh... That's another one of those kind of broad topics. If you're checking the Archives, I'd try reading stuff other Sleepers have written. Sometimes you can find old diaries and stuff there. Since we're all from other worlds, that might be your best bet. Or asking some of the Scholars - they might know something too. Is there a specific dimension you're looking for, or something else we can use to kinda narrow it down a little?