Arbortext Publishing Engine is distributed with an Arbortext PE Application written in ACL that facilitates the conversion of a document from one format to another. For example, an HTTP POST request might pass an XML document and specify that the document should be converted to PDF using an XSL stylesheet. Arbortext Publishing Engine makes no assumptions about the client of a conversion request; the client can be any program prepared to communicate using the HTTP protocol. The Arbortext Publishing Engine Document Conversion provides extensive information.