<programlisting/> elements must contain no newlines at beginning or end.
The following is an example of what not to do:
<programlisting><![CDATA[
package com.foo.bar;
class XFoo implements Foo<X> {
}]]>
</programlisting>
This leaves newlines at the beginning and end of the programlisting
panel within the PDF. Instead, do it like this:
<programlisting><![CDATA[package com.foo.bar;
class XFoo implements Foo<X> {
}]]></programlisting>
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