[…] the idea that a whole makes its parts, rather than the idea that a Whole Consists of Parts.
DOT FROM two-level-diagram
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Understanding Christopher Alexander’s Fifteen Properties via Visualization and Analysis. pdf 
> Christopher Alexander defines the concepts of wholeness and centers in his book The Nature of Order, and emphasizes the idea that a whole makes its parts, rather than the idea that a whole consists of parts. To clarify the difference, he calls the Parts Made by a Whole as “Centers.”