The Horizontal Rule Attributes Dialog Box

You can change the appearance of a horizontal line by selecting it, then choosing Element > Horizontal Rule Attributes.

When you're ready to make the changes, click the Apply button or the OK button. When you click Apply, the rule is changed and the Attributes window stays open. When you click OK, the rule is changed and the window is closed. Cancel cancels the changes to the horizontal rule and dismisses the dialog; Help launches help on the dialog.