Before revision: Both pure and impure intentionalism hold that there is a supervenience relation between phenomenal features and intentional features, for example, that two intentional states can't differ regarding their phenomenal features without differing at the same time in their intentional features.
After revision: Both pure and impure intentionalism hold that there is a supervenience relation between phenomenal features and intentional features, for example, that two intentional states cannot differ regarding their phenomenal features without differing at the same time in their intentional features.