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{ "id": "p03_arithmetic_expr", "entry": "frame", "needs_state": false, "checks": [ { "kind": "pixel_at", "frame": 0, "x": 0, "y": 0, "expect_rgb": [0, 0, 68], "rationale": "compute() == 68 == 0x000044; the clear paints every pixel [0,0,68]." } ] }