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The next 4 checkboxes allow you to add element to the paragraph.
Background
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The background option creates a background for this background.
The corner (radius) sets the radius for the rectangle.
The color defines the background color.
The offset defines the margins for the background, with the distances from the virtual paragraph box.
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This options sets the parameters to strike the characters diagonal.
Rule above and Rule below
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Set the parameters for a stroke above or below the paragraph lines
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