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[DirectX 6 Programmer's Reference] Overlay Surfaces (49.1556677018634%)

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[DirectX 7 Programmer's Reference] Overlay Surfaces (49.1556677018634%)

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[DirectX 5 Programmer's Reference] Overlay Z-Orders (46.0759575569358%)

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[DirectX 6 Programmer's Reference] Overlay Z-Orders (46.0759575569358%)

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[DirectX 6 Programmer's Reference] Overlay Color Keys (36.5273464458247%)

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