   <li><b>Use device pixel ratio</b> If enabled, the highest available device pixel
ratio is used to render at physical and display at logical resolution.</li>
    <li><b>Decorate pages</b> Determines whether pages are set apart from the
background.</li>
    <li><b>Decorate links</b> Determines whether links are highlighted by red
frames.</li>
    <li><b>Decorate form fields</b> Determines whether form fields are highlighted
by blue frames.</li>
    <li><b>Background color</b> Determines the color of the ba