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Blending Settings

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    Blend Mode option box
    Select an operation to blend the input image with the matte created by the edge detection, and the input matte (if the Use Matte button is enabled).
    Edge Transparency field
    Enter a value for the transparency applied to the edges.
    Use Matte button
    Enable to use the input matte to constrain the blending of the input image and the matte created by the edge detection.