What do CAD design tools, workflow automation, and digital audio synthesizers have in common?  They can all benefit from the Prototype pattern in their software architecture.

Although the Prototype pattern achieves true glory in languages such as JavaScript, which base their entire class structures on Prototypes instead of traditional classes, the pattern still brings powerful functionality to C#.  Its primary use is in a very specific niche: when the users of the application will perform design work, and then group those designs into reusable subcomponents.
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