Size

Preferred width: Defines the width of the marquee. By default, width is set to 100 percent of the viewer so the entire horizontal line is occupied by the marquee. For example, at 50 percent, the marquee will span half the topic viewing area, regardless of how the viewer is resized. To specify a width in pixels, clear Percent and enter the value.

Preferred Height: Defines the height of the marquee. By default, height is set to 100 percent of the viewer so the entire vertical area is occupied by the marquee. To specify a height in pixels, clear Percent and enter the value.

Maintain aspect ratio: Keeps width and height settings proportional.