<!ELEMENT resume (name,description?,education+)> <!ELEMENT name (first,last)> <!ATTLIST name style CDATA #IMPLIED> <!ELEMENT first (#PCDATA)> <!ELEMENT last (#PCDATA)> <!ELEMENT description (#PCDATA)> <!ELEMENT education (institution,degree?,years)> <!ELEMENT institution (#PCDATA)> <!ELEMENT degree (#PCDATA)> <!ELEMENT years (from,to)> <!ELEMENT from (#PCDATA)> <!ELEMENT to (#PCDATA)>