The predominant reading order for text: LeftToRight or RightToLeft (including vertical writing systems, such as Chinese, Japanese, and Korean). This entry has no direct effect on the document’s contents or page numbering but can be used to determine the relative positioning of pages when displayed side by side or printed n-up. Default value: LeftToRight.

public Nullable<PdfReadingDirection> Direction { get; set; }

Public Property Direction As Nullable(Of PdfReadingDirection)
	Get
	Set

public:
property Nullable<PdfReadingDirection> Direction {
	Nullable<PdfReadingDirection> get ();
	void set (Nullable<PdfReadingDirection> value);
}