You may specify two stylesheets when converting to RTF output, one using the stylesheet parameter and one using the export-stylesheet parameter. The stylesheet parameter is an XSL stylesheet (.xsl) that specifies an in-memory transformation that is performed before the document is translated to RTF. If omitted, no in-memory translation is performed. The export-stylesheet parameter must specify a Arbortext Styler.style file. If omitted, the default stylesheet for the document type of the input document is used to produce the RTF output. If the RTF document contains graphics, Arbortext Publishing Engine will return a zip archive.