Width Choose the width of the horizontal rule, and use the dropdown to specify the units as either number of pixels or percentage of the handheld's screen width.
Height Select the height (thickness) of the line, measured in pixels. Alignment Select the alignmnent of the horizontal rule. "Default" will not insert any alignment command, instead using whatever the most recent align command in the document was. Color You can select a color for the horizontal rule with the Choose color.. button. Using the same compiled output file, a black and white user will see a black horizontal rule, and color users see the colored horizontal rule. Grayscale users will see the horizontal rule in whichever shade of gray most closely resembles the color.
Beginner tip: Alignment only has an visible effect if the horizontal rule width is not 100 percent of the screen width.
Power user tip: The handheldscreen width is 150 pixels, so the parser will reduce widths greater than 150 pixels down to 150 pixels.