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Pin
Drawer
Hidden constraints
A panel may travel only a few millimetres until another panel exposes a groove or removes a stop.
State and sequence
Opening depends on the state of several parts at once. A move that appears pointless may be necessary because it changes the next legal move.
Model variations
Real boxes vary greatly. Move counts, panel directions and reset sequences are model-specific, so a generic animation should never be treated as the answer to an unidentified box.
Animation pauses automatically when your device requests reduced motion.