Is cXML a proprietary DTD?
cXML is published based on the input of many companies. cXML is a protocol that is published for free on the Internet along with its DTD. It is open to all for their use without restrictions apart from publications of modifications and naming that new protocol. Essentially, everyone is free to use cXML with any and all modifications as long as they don’t publish their own standard and call it “cXML”. • Is cXML contained completely in a single DTD? cXML is now spread across a number of DTD files. The primary transactions are contained in cXML.dtd; Confirmation and Ship Notice transactions are in Fulfill.dtd and the new InvoiceDetail transaction is in InvoiceDetail.dtd. All three have associated *.zip files containing the DTD for viewing, the constituent module files (*.mod), many XML example files and (in some cases) *.jpg files containing diagrams of the transactions. Only the cXML.zip file contains additional documentation (the cXMLUsersGuide.pdf file) describing the entire standard.
