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-rw-r--r--doc/hackersguide/hackersguide.docbook15
1 files changed, 8 insertions, 7 deletions
diff --git a/doc/hackersguide/hackersguide.docbook b/doc/hackersguide/hackersguide.docbook
index ebc42d4c7..353430991 100644
--- a/doc/hackersguide/hackersguide.docbook
+++ b/doc/hackersguide/hackersguide.docbook
@@ -1,10 +1,11 @@
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [
-<!ENTITY intro SYSTEM "intro.sgml" >
-<!ENTITY library SYSTEM "library.sgml" >
-<!ENTITY overview SYSTEM "overview.sgml" >
-<!ENTITY internals SYSTEM "internals.sgml">
-<!ENTITY stream SYSTEM "stream.sgml" >
-<!ENTITY output SYSTEM "output.sgml" >
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
+<!ENTITY intro SYSTEM "intro.docbook" >
+<!ENTITY library SYSTEM "library.docbook" >
+<!ENTITY overview SYSTEM "overview.docbook" >
+<!ENTITY internals SYSTEM "internals.docbook">
+<!ENTITY stream SYSTEM "stream.docbook" >
+<!ENTITY output SYSTEM "output.docbook" >
]>
<book>