From An Introduction to XML Basic Information Track Computational Science Course CPS616 -- Spring Semester 1999. byNancy McCracken,Ozgur Balsoy, Tom Scavo
A simple SGML document with embedded DTD: <!DOCTYPE DOCUMENT [ <!ELEMENT DOCUMENT O O (p*,BIGP*)> <!ELEMENT p - O (#PCDATA)> <!ELEMENT BIGP - O (#PCDATA)> ]> <DOCUMENT> <p>Welcome to <BIGP>XML Style! </DOCUMENT>