EDItEUR DTD
<!ELEMENT Book-Order (title?, Order-No, Message-Date, Buyer-EAN,
EDI-Prefix CDATA #FIXED "UNH+ME00579+ORDERS:D:93A:UN:EAN007"
EDI-Suffix CDATA #FIXED "UNS+S'CNT+2:2'UNT+18+ME00579"
Supplier CDATA #REQUIRED >
<!ELEMENT Order-No (#PCDATA) >
EDI-Prefix CDATA #FIXED "BGM+220+"
Datatype NAME #FIXED "C8"
Title CDATA "Book Order No:" >