Changes

The '''wiper_data''' unit class is used to define wipers which clear raindrops from the simulated glass panes in the interior view. A separate unit is used for each wiper. They are defined as nameless units, belonging to [[Documentation/Engine/Units/glass_pane_data|glass_pane_data]] via the ''wipers'' attribute and are typically included via '''/def/vehicle/truck/<makebrand.model>/interior/glass.sui'''.