Upper level: d1751w1 Special skill of science and technology
(4.A.3.b.2)
To explain manufacturing the device, parts, and the equipment or buildings, the compositions, assemblies, and the modification, maintenance, and use to others, the document, particular instructions, the drawing, and the specification are offered.
(additional explanation: Drafting, Laying Out, and Specifying Technical Devices, Parts, and Equipment)
Lower livel: