A split flap that slides backwards, before hinging downward, thereby increasing first chord, then camber. The single piece canopy opens by hinging forward on struts. Membranes that surround the bones help during the hinging and gliding of jaw movement. Hinging on domain ownership is a stance emerged in the early 2000. Japan also holds competitions hinging on various criteria including style. Another was hinging the two concrete slabs which make up the structure. This gave an overview of aesthetic appreciation hinging on the balance between color and design. It was a close-run contest with the result hinging on Russia's final floor performer.