<!ELEMENT dataset ((variable)*, rownames)>
<!ELEMENT variable (#PCDATA)*>
<!ELEMENT name     (#PCDATA)>
  
<!ATTLIST dataset 
     name        CDATA #REQUIRED
     numRecords  CDATA #IMPLIED
>


<!ATTLIST  variable
   name ID  #IMPLIED
   type CDATA #IMPLIED
   levels CDATA #IMPLIED
>

<!ELEMENT rownames (#PCDATA)*>
