Gets or sets a value that indicates the physical size in pixels to use when flattening an SVG document.
The physical size in pixels to use when flattening an SVG document. The default value is LeadSizeD.Empty.
An empty value (LeadSizeD.Empty) or a value with width and height equaling zero will automatically calculate the size of the flattened SVG document from the position and size of the child elements.
For an example, refer to SvgDocument.