Determines the width of a Section Report's printing area, in inches. If a Section Report's size changes at run time, its printing width must also be adjusted, to ensure that this Section Report uses the whole printing area. The size of the printing area must also include the width of margins, so that this Section Report do not oversize the paper size. If this happens, this error appears as a red-dotted line printed on every page of this Section Report. The default value of this property is 6.5 inches.