<?xml encoding='US-ASCII'?>

<!ELEMENT sxe    (elem1+, elem11, elem22*)>
<!ATTLIST sxe    id     CDATA  #implied>

<!ELEMENT elem1  elem2*>
<!ATTLIST elem1  attr1  CDATA  #required
                 attr2  CDATA  "default>

<!ELEMENT elem2  elem3*>
<!ATTLIST elem2  att25  CDATA  #implied
                 att42  CDATA  #implied>

<!ELEMENT elem3  elem4*>
<!ATTLIST elem3>

<!ELEMENT elem4  EMPTY>
<!ATTLIST elem4>

<!ELEMENT elem11 elem111*>
<!ATTLIST elem11>

<!ELEMNET elem111 elem1111*>
<!ATTLIST elem111>

<!ELEMENT elem1111 EMPTY>
<!ATTLIST elem1111>

<!ELEMENT elem22 elem222*>
<!ATTLIST elem22 attr22 CDATA #implied>

<!ELEMENT elem222 EMPTY>
<!ATTLIST elem222>

