rect_window_bottom_manager class
          #include <bn_rect_window_actions.h>
        
        Manages the position of the bottom boundary of a rect_
Public static functions
- 
              static auto get(rect_
window window) -> fixed  - Returns the position of the bottom boundary the given rect_
window.  - 
              static void set(fixed bottom,
              rect_
window window)  - Sets the position of the bottom boundary the given rect_
window.