Definition
A blueprint is the living plan of the project: it declares which sections exist, how they relate to each other, and what pieces each one is made of, before writing any code. It is not after-the-fact documentation, but the plan that is decided first and takes precedence over the code.
Relationships
is-a / broader
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types-of / more specific
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Concepts linked to this one by a real relationship in the glossary. Hover over each one to see why it's related.