[fix up validation
Don Stewart <dons@galois.com>**20080813230519] {
hunk ./en/ch19-ffi.xml 66
-<!-- <sect1>
+<sect1>
hunk ./en/ch19-ffi.xml 68
-  -->
hunk ./en/ch19-ffi.xml 198
+<sect2>
+  <title>A high level wrapper</title>
+
hunk ./en/ch19-ffi.xml 300
-<!-- </sect1> -->
+</sect2>
+
+</sect1>
}