The MasterBorder is the set of margins—top, bottom, left, and right—on the page.
By default, the left, right, and bottom margins are separated from each other by an outline. The lack of an outline between the left margin and the top margin indicates objects can straddle that boundary.
All pages have a MasterBorder. If no MasterBorder is visible, either the MasterBorder display is turned off on the View menu, or the assigned MasterBorder has all margins set to zero, like the ZeroMargins MasterBorder included with Corel Website Creator X6. You can change the size of any MasterBorder margin, even those set to zero. See Modifying the Current MasterBorder.
When you create a new site, Corel Website Creator X6 creates a default MasterBorder that contains three navigation aids—a banner showing the page name at the top, a graphical navigation button bar on the left, and a text navigation bar on the bottom. As you add levels to the SiteStructure, you can set navigation bar options to provide site visitors with appropriate access to all pages. See Setting Navigation Bar Type.