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The PDC consist of the various sections as User, Purpose, Experience (User Fee i.e. User's feelings, expectations, and experience from the developed product - imagine/visualize this), Functions, Features, components and validation/re-validation. Working on a PDC is an iterative exercise, once done first-hand, more and more revisions will enhance the product development spine. Create versions, more of it over a period of time. Improve each version or break-it-down to specific needs of the visualized product. Some of the examples also included.