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Positioning the attach point (Pro only)
The placement of the attach point determines the placement of your target footage, image, or effect control point. The default position is in the center of the feature region. You can move the attach point as necessary. While most times you'll want your target to be centered exactly on the feature region, there may be times when you need to offset the target from the source of the movement or times when the point of attachment is not the best feature to track.
For example, if you wanted to animate a flying saucer hovering over an undercover spy, you would position the feature region on a small, distinct area on the spy. If you left the attach point centered in the feature region, the saucer would be attached to that point (and would appear to have already landed on the spy). However, if you wanted the saucer to appear to be in pursuit, you would move the attach point out of the feature region to be somewhat above and behind the spy.
