Ключевые слова: 3d, application, blackboard, blurred, chalk, chalkboard, commentation, designation, elucidation, explanation, exploitation, exposition, folder, hand drawn, handwritten, image, instructions, interpretation, maintenance, management, method, office folder, office supplies, operating, operating instructions, operation, order, ring binder, rules, running, specification, stationery, table, toned, use, working,