DuplexMode API in JavaScript (ES5) Pdf Export API control

The paper handling option to use when printing the file from the print dialog.

// Create a new PDF document
let document : PdfDocument = new PdfDocument();
// Gets the viewer preferences of the document
let viewerPreferences : PdfViewerPreferences = document.viewerPreferences;
// Sets the duplex
viewerPreferences.duplex = DuplexMode.DuplexFlipLongEdge;
// Destroy the document
document.destroy();

• DuplexFlipLongEdge - Duplex and flip on the long edge of the sheet.
• DuplexFlipShortEdge - Duplex and flip on the short edge of the sheet.
• None - Default value.
• Simplex - Print single-sided.