We are using the following snippet of code to print labels to PDF, using the Native PDF Export: 

            btFormat.Printer = "PDF";
            btFormat.PrinterFile = pdfFullPath;

            PrintSetup btPrintSetup = btFormat.PrintSetup;
            PrintMethod btPrintMethod = btPrintSetup.PrintMethod;
            btPrintMethod.TrueTypeText = BtTextPrintMethod.btTextRasterGraphics;

            BtPrintResult brPrintResult = btFormat.Print(printParameters.JobName, true, -1, out messages);

This works fine, and we get multiple labels in the PDF output. However, the PDF does not have any borders around the labels.

I have been going through the documentation, but only found a reference to enabling borders as part of ExportPrintPreviewToImage. 

In Bartender Designer 2022 R4, in the Page Setup -> Shape, we see the option "Print Borders", which can be enabled and tweaked. I have looked at the PageSetup object, but have not found a way to do this. So, how can we enable the printing of borders in code, when using the Native PDF Export?