Entity: line 1: parser error : internal error
 %defroot; 
          ^
Entity: line 1: 
<!ELEMENT root (middle) >
^
Entity: line 1: parser error : DOCTYPE improperly terminated
 %defroot; 
          ^
Entity: line 1: 
<!ELEMENT root (middle) >
^
Entity: line 1: parser error : Start tag expected, '<' not found
 %defroot; 
          ^
Entity: line 1: 
&lt;!ELEMENT root (middle) >
 ^