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FROM Tweens
You can make almost any tween play FROM the given value to its current one
(instead than TO the given value from the current one, as by default) simply by
chaining a From setting to it:
// Regular TO tween
transform.DOMoveX(2, 1);
// FROM version of the same tween
transform.DOMoveX(2, 1).From();
// FROM version of the same tween, with a relative FROM value
transform.DOMoveX(2, 1).From(true);