Why CurserMove didn't in input::mouse Module?

[LTstrange]

Hi!
I'm new to bevy. when I start to learn how to get mouse input, I feel confuse about there has no way to access mouse position. But soon, I found that mouse position is in bevy::prelude.
I can understand that maybe mouse position can only access by window. but, it can really confuse people, that mouse position "isn't" a mouse input.
Is there anyway to move mouse position to mouse input module? I think that will be better for a game engine.
Or is there has some unknown reason that it has to be there? Thank you for your answer!
:-)