Rulers run vertically and horizontally along the page to assist in element alignment and spacing.
1. To toggle rulers click the Rulers icon on the upper editor tool bar (top of the page)
2. You can add custom grid lines to both the vertical and horizontal rulers by clicking on the point where you want to add one. There is no limit to the number of custom grid lines that can be added to a page and they can be moved freely along the rulers. You can place custom grid lines precisely by clicking their marker and changing their placement value.
3. To remove a custom grid line, click its marker on the ruler and then click the Delete Line button.