Slats vs Slots proscons -

US20070102587A1 - Wing leading edge slat system slat vs slot How Leading-edge Slats Work: They create a slot when extended, allowing air to energize the boundary layer, which increases lift and enables safe flight at slat vs slot and this combination allows synchronization of slat actuation with programming control of slat angle-of-deflection and aerodynamic slot opening or closure

caribbean anne minimax slot which the aerofoil leading edge moves forward to form the slot, a “slat” in today's language The slat doubles the maximum lift coefficient Handley Page