Truly closed or relatively closed? 2-J-1

[rchang72]

In 2-J-1, it states " Angled Hinging gives the Clubface a Slice producing uncentered motion so while the Clubface does 'Close' during impact, Clubface alignment is slightly 'Open' for short shots but for longer shots must be set up more and more 'Closed'"

Does that mean for say a driver the face should be closed to the impact plane line? Or since there is still some closing, it should be slightly open, but not as open as for horizontal hinging?