The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
Nature, Published online: 25 February 2026; doi:10.1038/d41586-025-04161-7
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Interaction — Draggable, Hoverable, Clickable mobjects
Space exploration
They can even go direct to the Twig's factory in the city of Shawano to have the same bottles refilled. Some are vintage ones still going strong after 60 or so years.