Changed ffi doc to worker-wrapper format.
--- /dev/null
+<!DOCTYPE Article PUBLIC "-//OASIS//DTD DocBook V3.1//EN" [
+<!ENTITY ffi-body SYSTEM "ffi.sgml">
+]>
+
+<Article id="ffi-article">
+
+<ArtHeader>
+
+<Title>A Haskell foreign function interface</Title>
+<Author><OtherName>The GHC Team</OtherName></Author>
+<Address><Email>glasgow-haskell-{users,bugs}@dcs.gla.ac.uk</Email>
+</Address>
+<Edition>version 0.99</Edition>
+<PubDate>May 2000</PubDate>
+
+</ArtHeader>
+
+&ffi-body;
+
+</Article>
-<!DOCTYPE Article PUBLIC "-//OASIS//DTD DocBook V3.1//EN">
-
-<Article id="ffi">
-
-<ArtHeader>
-
-<Title>A Haskell foreign function interface</Title>
-<Author><OtherName>The GHC Team</OtherName></Author>
-<Address><Email>glasgow-haskell-{users,bugs}@dcs.gla.ac.uk</Email>
-</Address>
-<Edition>version 0.99</Edition>
-<PubDate>May 2000</PubDate>
-
-</ArtHeader>
-
<Sect1 id="sec-intro">
<Title>Introduction
</Title>
</Para>
</Sect1>
-
-</Article>