-<!DOCTYPE a [
-
-<!ELEMENT a (b | (c, d)* | (e, f)+ | g?)>
-<!ELEMENT b (#PCDATA | a)*>
-<!ELEMENT c EMPTY>
-<!ELEMENT d ANY>
-<!ELEMENT e EMPTY>
-<!ELEMENT f EMPTY>
-<!ELEMENT g EMPTY>
-
-<!ATTLIST a u CDATA #IMPLIED
- v NMTOKEN "huhu"
- w (q|p) #REQUIRED
- x NOTATION (n1|n2) "n1"
- y ENTITY #IMPLIED>
-
-<!NOTATION n1 SYSTEM "/bin/n1-processor">
-<!NOTATION n2 SYSTEM "/bin/n2-processor">
-
-<!ENTITY u1 SYSTEM "file-u1" NDATA n1>
-<!ENTITY u2 SYSTEM "file-u2" NDATA n2>
-
-<!-- comment 1 -->
-<?pi1 args ...?>
-]>
-
-<!-- comment 2 -->
-<a u="1" w="q" x="n2">
- <!-- comment 3 -->
- <b>
- <?pi2 args ...?>
- This is text!
- <a w="p" y="u1">
- <c/>
- <d/>
- </a>
- </b>
- <!-- comment 4 -->
-</a>
-
-<!-- comment 5 -->
-<?pi3 args ...?>
-<!-- comment 6 -->
-