<?xml version="1.1"?>

<!DOCTYPE exa [
	
<!ELEMENT exa (a|b)*>
<!ELEMENT a EMPTY>
<!ELEMENT b ANY>

<!ATTLIST a xml:lang CDATA "i-">
<!ATTLIST c x NMTOKEN "1">

<!ENTITY amp "&#38;">
<!ENTITY amp "&#38;#38;">

<!NOTATION text SYSTEM "/bin/cat">
<!NOTATION text SYSTEM "/usr/local/bin/less">
]>

<exa>
<a xml:lang="yy"/>
</exa>

