Customizer's Guide > Customizing PDF Publishing > Using FOSI Publishing Engine for PDF
  
Using FOSI Publishing Engine for PDF
You can publish PDF with the FOSI publishing engine by sending publishing requests to Arbortext Publishing Engine and specifying the FOSI print engine in the stylesheet, by having Arbortext Styler running with Arbortext Editor, or by having a Print Composer license on Arbortext Editor.
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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.