Now examples of discontinuous functions over interval or non-continuous functions, well, they would have gaps of some kind. They could have some type of an asymptotic discontinuity. So something like that, that makes it discontinuous. They could have a jump discontinuity, something like that. They could just have a gap where they're not defined. So they could have a gap where they're not defined. Or maybe they actually are defined there, but it's removable discontinuity.