Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
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Other specs include a 13-inch Liquid Retina display with a 60Hz refresh rate and 500 nits of brightness, WiFi 6E, Bluetooth 6, 8GB of RAM, two USB-C ports, a MagSage charging port, and a headphone jack.
按照問卷說法，「樓換樓」是指以原來的宏福苑單位，換取與業權收購「價格相若」的全新居屋單位，並非「面積相若」。