Horizontal rules (lines) are useful for organizing information. On a page, you can visually separate text and objects with one or more rules.
W and H specify the width and height of the rule in pixels or as a percentage of the page size.
Align specifies the alignment of the rule (Default, Left, Center, or Right). This setting applies only if the width of the rule is less than the width of the browser window.
Shading specifies whether the rule is drawn with shading. Deselect this option to draw the rule in a solid color.