When producing PDF using PTC Advanced Print Publisher, the conversion processor uses PTC APP to publish documents based on a Arbortext Styler stylesheet that uses PTC APP for print or PDF or on a native .3f stylesheet. Creating Arbortext Styler stylesheets for PTC APP is documented in the Arbortext Styler documentation. These stylesheets must be on the Arbortext PE server to be available to Arbortext Editor and other client applications. PTC APP extends the functionality available from a Arbortext Styler stylesheet, particularly support for CJK languages and Hebrew, Arabic, and Thai.