All Latest version of the dfdl expression language. As a result of the comment received I have added a section with a formal description of the syntax and removed the equivalent word sections. The syntax was extracted from the XPath spec and unnecessary sections removed. This doc has been included in the latest version of the full spec. Alan Powell MP 211, IBM UK Labs, Hursley, Winchester, SO21 2JN, England Notes Id: Alan Powell/UK/IBM email: alan_powell@uk.ibm.com Tel: +44 (0)1962 815073 Fax: +44 (0)1962 816898 Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU