The long edge is rolled towards the point, leaving a portion unrolled. This cylinder is wrapped around the Earth, projected onto, and then unrolled. The cylindrical shepherd's dial can be unrolled into a flat plate. In lieu of glass, side curtains of canvas could be unrolled. From 1802 to 1806, Hayter unrolled and partly deciphered some 200 papyri. The cylinder is then unrolled to give the planar map. They were carefully unrolled using a special machine made by Fr. The loop may also be fully unrolled. Roll reinforcement is usually prepared off-site and easily unrolled on site. They can be "unrolled" into a square 10x10 array. To additionally improve speed, the loop can be unrolled by pre-computing the values of sum+key[]. It is also possible to include a "previous" pointer for an unrolled doubly linked list. Aristotle solved this complication by introducing an unrolled sphere. They have been unrolled and preserved with great labor and care. The contest has seen several controversies including the theft of unrolled cups.