Sets or returns a boolean that represents whether or not Word will display the header inside the page border for a document.

public boolean IncludeHeaderInBorder{ get; set; }
Public Property IncludeHeaderInBorder() As Boolean

This option is set to true by default.

MS Word equivalent: Format menu > Border and Shading... > Page Border tab > Options... button > Options section > Surround header

          //--- Return IncludeHeaderInBorder
          bool includeHeader = viewSettings.IncludeHeaderInBorder;

          //--- Set IncludeHeaderInBorder
          viewSettings.IncludeHeaderInBorder = false;
        
          '--- Return IncludeHeaderInBorder
          Dim includeHeader As Boolean = viewSettings.IncludeHeaderInBorder

          '--- Set IncludeHeaderInBorder
          viewSettings.IncludeHeaderInBorder = False