Enter the width (length) of your horizontal line. Note: If left blank, the line will span the entire window length.
Select 'Percentage' to measure the size of your horizontal line as a percentage of the size of the window, or select 'Pixels' to measure the size of your horizontal line in pixels.
Thickness
Enter the vertical size (height) of your horizontal line. Note: If left blank, the line will be one pixel thick.
Align
Select the alignment you want for your horizontal line from this pop-up menu.
Shaded?
If checked, your horizontal line will be a shadow line. If not checked, it will be a solid line.