1  <!DOCTYPE doc [<!ATTLIST normId attr NMTOKENS #IMPLIED>]>
 2  <doc>
 3    <!-- no normalization -->
 4    <norm attr='   '/>
 5    <norm attr='
 6    foo bar   '/>
 7    <norm attr='
 8  
 9  foobar'/>
10    <norm attr=' foo bar
11  '/>
12    <norm attr='foobar
13  
14  '/>
15    <norm attr=' &amp; '/>
16    <norm attr='
17    foo&amp;bar   '/>
18    <norm attr='
19  
20  foobar&amp;'/>
21    <norm attr='&amp;foo bar
22  '/>
23    <norm attr='foobar
24  
25  &amp;'/>
26    <norm attr=' &lt; '/>
27    <norm attr='
28    foo&lt;bar   '/>
29    <norm attr='
30  
31  foobar&lt;'/>
32    <norm attr='&lt;foo bar
33  '/>
34    <norm attr='foobar
35  
36  &lt;'/>
37    <norm attr=' &#x20;&#13;&#xa;&#9; '/>
38    <!-- normalization -->
39    <normId attr='   '/>
40    <normId attr='
41    foo bar   '/>
42    <normId attr='
43  
44  foobar'/>
45    <normId attr=' foo bar
46  '/>
47    <normId attr='foobar
48  
49  '/>
50    <normId attr=' &amp; '/>
51    <normId attr='
52    foo&amp;bar   '/>
53    <normId attr='
54  
55  foobar&amp;'/>
56    <normId attr='&amp;foo bar
57  '/>
58    <normId attr='foobar
59  
60  &amp;'/>
61    <normId attr=' &lt; '/>
62    <normId attr='
63    foo&lt;bar   '/>
64    <normId attr='
65  
66  foobar&lt;'/>
67    <normId attr='&lt;foo bar
68  '/>
69    <normId attr='foobar
70  
71  &lt;'/>
72    <normId attr=' &#13;&#xa;&#9; '/> <!-- PBM serializing back -->
73  </doc>