Width — lets you specify the width of the halo on each side of the line
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Scale with outline — lets you lock the original width ratio of the halo to the line or outline so the width of the halo is adjusted when you change the line or outline width, and vice versa
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Color — lets you change the color of the halo, or use the color of the page
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Opacity — lets you control the transparency of the halo and the visibility of objects underneath the halo by specifying a percentage value (with values less than 100 allowing underlying object areas to be visible)
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Justification — lets you specify the position of the halo in relation to the line or outline. This control is available only for callouts.