Manual vs Boundaries

I am confused about the difference between having a manual and having boundaries. For example, I would have said that my manual says: I expect my friends to call me if they want to spend time together. But when I think about dropping my manual, I’m not sure what that example would look like. So I’m wondering if this is actually an example of a boundary: I reach out to my friends when I want to spend time with them (as opposed to guessing when/how much they want to get together).

Am I on track with this reframing?