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Every issue belongs to a project. Each project has a name (e.g. Website Issues) and a key (e.g. WEB). The project key becomes the first part of that project's issue keys, e.g. WEB-101, WEB-102, etc:
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For example, a software development project could consist of components called 'Documentation', 'Backend', 'Email Subsystem', 'GUI'. A website enhancement request system might consist of components called 'Products', 'Contact Us', etc:
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An issue can belong to zero, one or multiple components within a project.

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