Customizer's Guide > Customizing PDF Publishing > Choosing PDF Configuration Options
  
Choosing PDF Configuration Options
When Arbortext Editor and Arbortext Publishing Engine publish PDF files, they use an XML configuration file (a .appcf for PTC ALD, a .pdfcf file for FOSI) to specify PDF options.
When publishing PDF, you can choose a PDF configuration file by:
choosing a PDF configuration file in the Publish PDF File dialog box.
specifying a default PDF configuration file using the set pdfconfigfile command (documented in the Arbortext Command Language Reference).
You can use or modify one of the PDF configuration files distributed with Arbortext Editor and Arbortext Publishing Engine or create a custom PDF configuration file.
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The FOSI and XSL-FO print engines are on sustained support and do not receive enhancements or maintenance fixes. PTC ALD is the recommended engine for print output.