Original production art includes any one-of-a-kind (original) artwork that was used to create an animated film or short. This includes hand-painted cels, backgrounds, rough drawings, clean-up drawings, and other elements used during the production. The cels, in particular, are considered very rare, not only because of their one-of-a-kind nature, but also because most inking and painting is now completed in a computer instead of on a sheet of celluloid. The original rough and cleaned-up drawings are still done by hand. Original production art is only available to select Disney Preferred Galleries like World Wide Art.