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Shape Hints in Flash Adobe Flash / Getting Started
Flash likes to use the path of least resistance when morphing, which can sometimes make your shape tween look like your cat sat on it. Enter, stage left, Shape Hints! These are added when tweening shapes to give you more control over the transition. They can keep the integrity of key shapes while you morph, instead of going through a tangle of colours and lines that have a closer resembalence to one of my stews than of a morphing shape.