22 files changed, 46 insertions, 43 deletions
diff --git a/doc/reference/Alias.sgml b/doc/reference/Alias.xml
index b87967d..b87967d 100644
--- a/doc/reference/Alias.sgml
+++ b/doc/reference/Alias.xml
diff --git a/doc/reference/CFile.sgml b/doc/reference/CFile.xml
index f76c390..f76c390 100644
--- a/doc/reference/CFile.sgml
+++ b/doc/reference/CFile.xml
diff --git a/doc/reference/CXXFile.sgml b/doc/reference/CXXFile.xml
index c1c038e..c1c038e 100644
--- a/doc/reference/CXXFile.sgml
+++ b/doc/reference/CXXFile.xml
diff --git a/doc/reference/Command.sgml b/doc/reference/Command.xml
index abb3a58..abb3a58 100644
--- a/doc/reference/Command.sgml
+++ b/doc/reference/Command.xml
diff --git a/doc/reference/Install.sgml b/doc/reference/Install.xml
index 2d06e3b..2d06e3b 100644
--- a/doc/reference/Install.sgml
+++ b/doc/reference/Install.xml
diff --git a/doc/reference/InstallAs.sgml b/doc/reference/InstallAs.xml
index ed8cb78..ed8cb78 100644
--- a/doc/reference/InstallAs.sgml
+++ b/doc/reference/InstallAs.xml
diff --git a/doc/reference/Library.sgml b/doc/reference/Library.xml
index 19a3e96..19a3e96 100644
--- a/doc/reference/Library.sgml
+++ b/doc/reference/Library.xml
diff --git a/doc/reference/MANIFEST b/doc/reference/MANIFEST
index 1ea958e..438aada 100644
--- a/doc/reference/MANIFEST
+++ b/doc/reference/MANIFEST
@@ -1,21 +1,21 @@
-Alias.sgml
-CFile.sgml
-CXXFile.sgml
-Command.sgml
-Install.sgml
-InstallAs.sgml
-Library.sgml
-Object.sgml
-PCH.sgml
-PDF.sgml
-PostScript.sgml
-Program.sgml
-RES.sgml
-SharedLibrary.sgml
-SharedObject.sgml
-StaticLibrary.sgml
-StaticObject.sgml
-copyright.sgml
-errors.sgml
-main.sgml
-preface.sgml
+Alias.xml
+CFile.xml
+CXXFile.xml
+Command.xml
+Install.xml
+InstallAs.xml
+Library.xml
+Object.xml
+PCH.xml
+PDF.xml
+PostScript.xml
+Program.xml
+RES.xml
+SharedLibrary.xml
+SharedObject.xml
+StaticLibrary.xml
+StaticObject.xml
+copyright.xml
+errors.xml
+main.xml
+preface.xml
diff --git a/doc/reference/Object.sgml b/doc/reference/Object.xml
index 9e887d8..9e887d8 100644
--- a/doc/reference/Object.sgml
+++ b/doc/reference/Object.xml
diff --git a/doc/reference/PCH.sgml b/doc/reference/PCH.xml
index b2a4d75..b2a4d75 100644
--- a/doc/reference/PCH.sgml
+++ b/doc/reference/PCH.xml
diff --git a/doc/reference/PDF.sgml b/doc/reference/PDF.xml
index b3a25dc..b3a25dc 100644
--- a/doc/reference/PDF.sgml
+++ b/doc/reference/PDF.xml
diff --git a/doc/reference/PostScript.sgml b/doc/reference/PostScript.xml
index f5a6579..f5a6579 100644
--- a/doc/reference/PostScript.sgml
+++ b/doc/reference/PostScript.xml
diff --git a/doc/reference/Program.sgml b/doc/reference/Program.xml
index 30f90d2..30f90d2 100644
--- a/doc/reference/Program.sgml
+++ b/doc/reference/Program.xml
diff --git a/doc/reference/RES.sgml b/doc/reference/RES.xml
index 15c0aea..15c0aea 100644
--- a/doc/reference/RES.sgml
+++ b/doc/reference/RES.xml
diff --git a/doc/reference/SharedLibrary.sgml b/doc/reference/SharedLibrary.xml
index 603dab1..603dab1 100644
--- a/doc/reference/SharedLibrary.sgml
+++ b/doc/reference/SharedLibrary.xml
diff --git a/doc/reference/SharedObject.sgml b/doc/reference/SharedObject.xml
index 0860769..0860769 100644
--- a/doc/reference/SharedObject.sgml
+++ b/doc/reference/SharedObject.xml
diff --git a/doc/reference/StaticLibrary.sgml b/doc/reference/StaticLibrary.xml
index ea7ae5b..ea7ae5b 100644
--- a/doc/reference/StaticLibrary.sgml
+++ b/doc/reference/StaticLibrary.xml
diff --git a/doc/reference/StaticObject.sgml b/doc/reference/StaticObject.xml
index ff8dae8..ff8dae8 100644
--- a/doc/reference/StaticObject.sgml
+++ b/doc/reference/StaticObject.xml
diff --git a/doc/reference/copyright.sgml b/doc/reference/copyright.xml
index 7f6059c..7f6059c 100644
--- a/doc/reference/copyright.sgml
+++ b/doc/reference/copyright.xml
diff --git a/doc/reference/errors.sgml b/doc/reference/errors.xml
index 448777f..448777f 100644
--- a/doc/reference/errors.sgml
+++ b/doc/reference/errors.xml
diff --git a/doc/reference/main.sgml b/doc/reference/main.xml
index 87b4a84..ed122f6 100644
--- a/doc/reference/main.sgml
+++ b/doc/reference/main.xml
@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+
 <!--
 
   Copyright (c) 2001, 2002, 2003 Steven Knight
@@ -23,39 +25,40 @@
 
 -->
 
-<!doctype book PUBLIC "-//OASIS//DTD DocBook V4.1//EN"
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"
 [
 
-    <!ENTITY % version SYSTEM "../version.sgml">
+    <!ENTITY % version SYSTEM "../version.xml">
     %version;
 
     <!ENTITY % scons SYSTEM "../scons.mod">
     %scons;
 
     <!-- Builders -->
-    <!ENTITY Alias_file SYSTEM "Alias.sgml">
-    <!ENTITY CFile_file SYSTEM "CFile.sgml">
-    <!ENTITY CXXFile_file SYSTEM "CXXFile.sgml">
-    <!ENTITY Command_file SYSTEM "Command.sgml">
-    <!ENTITY Install_file SYSTEM "Install.sgml">
-    <!ENTITY InstallAs_file SYSTEM "InstallAs.sgml">
-    <!ENTITY Library_file SYSTEM "Library.sgml">
-    <!ENTITY Object_file SYSTEM "Object.sgml">
-    <!ENTITY PCH_file SYSTEM "PCH.sgml">
-    <!ENTITY PDF_file SYSTEM "PDF.sgml">
-    <!ENTITY PostScript_file SYSTEM "PostScript.sgml">
-    <!ENTITY Program_file SYSTEM "Program.sgml">
-    <!ENTITY RES_file SYSTEM "RES.sgml">
-    <!ENTITY SharedLibrary_file SYSTEM "SharedLibrary.sgml">
-    <!ENTITY SharedObject_file SYSTEM "SharedObject.sgml">
-    <!ENTITY StaticLibrary_file SYSTEM "StaticLibrary.sgml">
-    <!ENTITY StaticObject_file SYSTEM "StaticObject.sgml">
+    <!ENTITY Alias_file SYSTEM "Alias.xml">
+    <!ENTITY CFile_file SYSTEM "CFile.xml">
+    <!ENTITY CXXFile_file SYSTEM "CXXFile.xml">
+    <!ENTITY Command_file SYSTEM "Command.xml">
+    <!ENTITY Install_file SYSTEM "Install.xml">
+    <!ENTITY InstallAs_file SYSTEM "InstallAs.xml">
+    <!ENTITY Library_file SYSTEM "Library.xml">
+    <!ENTITY Object_file SYSTEM "Object.xml">
+    <!ENTITY PCH_file SYSTEM "PCH.xml">
+    <!ENTITY PDF_file SYSTEM "PDF.xml">
+    <!ENTITY PostScript_file SYSTEM "PostScript.xml">
+    <!ENTITY Program_file SYSTEM "Program.xml">
+    <!ENTITY RES_file SYSTEM "RES.xml">
+    <!ENTITY SharedLibrary_file SYSTEM "SharedLibrary.xml">
+    <!ENTITY SharedObject_file SYSTEM "SharedObject.xml">
+    <!ENTITY StaticLibrary_file SYSTEM "StaticLibrary.xml">
+    <!ENTITY StaticObject_file SYSTEM "StaticObject.xml">
 
     <!-- Construction Variables -->
 
-    <!ENTITY copyright SYSTEM "copyright.sgml">
-    <!ENTITY errors SYSTEM "errors.sgml">
-    <!ENTITY preface SYSTEM "preface.sgml">
+    <!ENTITY copyright SYSTEM "copyright.xml">
+    <!ENTITY errors SYSTEM "errors.xml">
+    <!ENTITY preface SYSTEM "preface.xml">
 
 ]>
 
diff --git a/doc/reference/preface.sgml b/doc/reference/preface.xml
index 82ea44a..82ea44a 100644
--- a/doc/reference/preface.sgml
+++ b/doc/reference/preface.xml