From Styler, select File > Export > XSL-FO. In the Editor, select File > Compose > Using XSL. Browse to a location where you want to save the FO file and enter a name for it, applying a .fo extension. Pick the xsl stylesheet you saved in the first step and click OK. Wait for the editor to process the composition job. You should get a "Publish using XSL complete" message when it is done.