--- /dev/null
+<?xml version="1.0"?>
+
+<!DOCTYPE any [
+
+<!ELEMENT el EMPTY>
+<!ATTLIST el
+ nmtoken NMTOKEN #FIXED "a"
+ nmtokens NMTOKENS #FIXED "a b c"
+>
+<!ELEMENT any ANY>
+]>
+
+<any>
+ <el nmtoken="
+a
+"/>
+ <el nmtokens="
+a
+b
+c
+"/>
+</any>