The nature of the invention must be defined in the disclosure and the manner in which the invention is to be carried out, must be described. In the case of a machine (for example, a computer), the best mode of operation must be described. In the case of a process (for example, the implementation of an algorithm by computer process), the necessary sequence of steps must be explained for distinguishing the invention from the prior art.
The description is like a manual that accompanies a kit such as a home barbecue. In the case of a patent for an apparatus, it includes a parts list identifying the parts needed to make the apparatus and assembly instructions explaining how to put the parts together. This description is used as a cross-reference to a series of drawings bearing numbers corresponding to the parts illustrating how the device is put together. Operating instructions explain how to use the device in the best manner known.
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