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Generally doing SetPoint without doing a ClearAllPoints first creates a second point for a frame ie. streching it from the original point to the new second (third...) point. ClearAllPoints "unlocks" the frame to locate it in a new position altogether.
The only time this doesn't apply is just after the frame is first created as it has no point set at that time.
Last edited by Fizzlemizz : 06-28-16 at 03:02 PM.
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