Compositions and methods are described to enhance embryo implantation. One embodiment of a bending method according to the present invention comprises heating a perimeter light to make it pliable. The ground cover and cables or chains are rewound by a reverse procedure pushing the cover reel assembly forward. The invention also relates to an exemplary method of fabricating semiconductor devices on a layer of at least partially relaxed material. A plurality of door panels has a surface with a low coefficient of friction and is fixedly attached to and in operational communication with the spring hinges. A first space is formed between the moving inker, which is set at a retraction position, and the first and second printing cylinders so as to permit entrance of the operator into it.