2008-06-26 Emmanuele Bassi <ebassi@openedhand.com>

	* clutter/clutter-overview.xml: Split the overview into its own
	file, so we gtk-doc can linkify all class names.

	* clutter/building-clutter.xml: Split the building instructions
	into its own file, for better maintainability.

	* clutter/clutter-animation.xml:
	* clutter/creating-behaviours.xml:
	* clutter/subclassing-ClutterActor.xml: Rename from SGML to XML;
	these were not SGML files anyway, but templates.

	* clutter/clutter-docs.sgml: Use XInclude instead of the ugly
	entities hack.

	* clutter/Makefile.am: Update the build.

8 files changed, 323 insertions, 303 deletions

diff --git a/doc/reference/ChangeLog b/doc/reference/ChangeLog
index 723bceb5e..176a3649d 100644
--- a/doc/reference/ChangeLog
+++ b/doc/reference/ChangeLog
@@ -1,3 +1,21 @@
+2008-06-26  Emmanuele Bassi  <ebassi@openedhand.com>
+
+	* clutter/clutter-overview.xml: Split the overview into its own
+	file, so we gtk-doc can linkify all class names.
+
+	* clutter/building-clutter.xml: Split the building instructions
+	into its own file, for better maintainability.
+
+	* clutter/clutter-animation.xml:
+	* clutter/creating-behaviours.xml:
+	* clutter/subclassing-ClutterActor.xml: Rename from SGML to XML;
+	these were not SGML files anyway, but templates.
+
+	* clutter/clutter-docs.sgml: Use XInclude instead of the ugly
+	entities hack.
+
+	* clutter/Makefile.am: Update the build.
+
 2008-06-25  Emmanuele Bassi  <ebassi@openedhand.com>
 
 	* clutter/clutter-sections.txt: Add missing symbols.
diff --git a/doc/reference/clutter/Makefile.am b/doc/reference/clutter/Makefile.am
index e4681203a..176160b48 100644
--- a/doc/reference/clutter/Makefile.am
+++ b/doc/reference/clutter/Makefile.am
@@ -97,18 +97,22 @@ HTML_IMAGES=\
 # Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
 # e.g. content_files=running.sgml building.sgml changes-2.0.sgml
 content_files= \
-	subclassing-ClutterActor.sgml \
-        clutter-animation.sgml        \
-	creating-your-own-behaviours.sgml \
-	version.xml
+	version.xml \
+	subclassing-ClutterActor.xml \
+        clutter-animation.xml \
+	creating-behaviours.xml \
+	clutter-overview.xml \
+	building-clutter.xml
 
 # SGML files where gtk-doc abbrevations (#GtkWidget) are expanded
 # These files must be listed here *and* in content_files
 # e.g. expand_content_files=running.sgml
 expand_content_files= \
-	subclassing-ClutterActor.sgml \
-        clutter-animation.sgml \
-	creating-your-own-behaviours.sgml
+	subclassing-ClutterActor.xml \
+        clutter-animation.xml \
+	creating-behaviours.xml \
+	clutter-overview.xml \
+	building-clutter.xml
 
 # CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library.
 # Only needed if you are using gtkdoc-scangobj to dynamically query widget
diff --git a/doc/reference/clutter/building-clutter.xml b/doc/reference/clutter/building-clutter.xml
new file mode 100644
index 000000000..38c814ac4
--- /dev/null
+++ b/doc/reference/clutter/building-clutter.xml
@@ -0,0 +1,236 @@
+<part id="building-clutter">
+  <partinfo>
+    <author>
+      <firstname>Emmanuele</firstname>
+      <surname>Bassi</surname>
+      <affiliation>
+        <address>
+          <email>ebassi@openedhand.com</email>
+        </address>
+      </affiliation>
+    </author>
+  </partinfo>
+
+  <title>Building Clutter</title>
+
+  <partintro>
+
+    <section id='dependencies'>
+      <title>Clutter Dependencies</title>
+
+      <variablelist>
+        <varlistentry>
+          <term>GLib</term>
+          <listitem>
+            <para>A general-purpose utility library, not specific to
+            graphical user interfaces. GLib provides many useful data
+            types, macros, type conversions, string utilities, file
+            utilities, a main loop abstraction, and so on.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>GObject</term>
+          <listitem>
+            <para>The GLib Object System provides the required
+            implementations of a flexible, extensible and intentionally
+            easy to map (into other languages) object-oriented framework
+            for C.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>Pango</term>
+          <listitem>
+            <para>Pango is a library for laying out and rendering
+            text, with an emphasis on internationalization.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>Backend Windowing System Library</term>
+          <listitem>
+            <para>GLX, EGL (1.1), SDL, Cocoa (OS X) and WGL (Windows)</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term>Graphics Rendering </term>
+          <listitem>
+            <para>Open GL (1.4+) ir Open GL ES (1.1) </para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+    </section>
+
+    <section id='building-instructions'>
+      <title>Platform-specific instructions</title>
+
+      <section id='building-linux'>
+        <title>Linux</title>
+
+        <para>If you are using Debian or Ubuntu, you can install pre-compiled
+        binary packages the normal Debian way following the instructions at
+        <ulink type="http" url="http://debian.o-hand.com/">
+        http://debian.o-hand.com/</ulink>.
+        </para>
+
+        <para>To build Clutter clutter from sources, get the latest source
+        archives from <ulink type="http"
+        url="http://www.clutter-project.org/sources/">
+        http://www.clutter-project.org/sources/</ulink>. Once you have extracted
+        the sources from the archive execute the following commands in the
+        top-level directory:
+        </para>
+
+        <literallayout>
+    $ ./configure
+    $ make
+    # make install
+        </literallayout>
+
+        <para>You can configure the build with number of additional arguments
+        passed to the configure script, the full list of which can be obtained
+        by running ./configure --help. The following arguments are specific to
+        Clutter:
+
+            <variablelist>
+              <varlistentry>
+                <term>--enable-debug=[no/minimum/yes]</term>
+                <listitem>
+                  <para>Turns on debugging. Possible values are: yes -  all
+                  glib asserts, checks and runtime clutter verbose messages;
+                 minimum - just glib cast checks and runtime clutter verbose
+                 messagaes; no - no glib asserts or checks and no runtime
+                 clutter verbose messages; default=yes.
+                 </para>
+                </listitem>
+              </varlistentry>
+
+              <varlistentry>
+                <term>--enable-maintainer-flags=[no/yes]</term>
+                <listitem>
+                  <para>Use strict compiler flags; default=no.
+                  </para>
+                </listitem>
+              </varlistentry>
+
+              <varlistentry>
+                <term>--enable-gtk-doc</term>
+                <listitem>
+                  <para>Use gtk-doc to build documentation; default=no.
+                  </para>
+                </listitem>
+              </varlistentry>
+
+              <varlistentry>
+                <term>--enable-manual=[no/yes]</term>
+                <listitem>
+                  <para>Build application developers manual; requires jw and
+                  xmlto binaries; default=no.
+                  </para>
+                </listitem>
+              </varlistentry>
+
+              <varlistentry>
+                <term>--with-flavour=[glx/eglx/eglnative/sdl]</term>
+                <listitem>
+                  <para>Select the Clutter backend; default=glx.
+                  </para>
+                </listitem>
+              </varlistentry>
+
+            </variablelist>
+
+        </para>
+
+      </section>
+
+      <section id='building-windows'>
+        <title>Windows</title>
+          <para>
+            The recommended way of building Clutter for Windows is using the
+            <ulink type="http" url="http://www.mingw.org/">mingw</ulink> tool
+            chain. One option is to cross-compile Clutter under Linux -- you
+            can use the script found in the <filename>build/mingw/</filename>
+            directory to simplify the process (the script takes care of setting
+            up the necessary dependencies).
+          </para>
+
+          <para>
+            If you wish to build Clutter using mingw direcly under Windows, you
+            can do so the normal *nix way (described above) using the mingw
+            POSIX shell. Should you prefer to use Microsoft Visual Studio, a
+            project file for MSVC 2005 is located in the
+            <filename>build/msvc_2k5/</filename> directory. In either case, you
+            will need to first install the required dependencies.
+            </para>
+            <para>
+            There are currently two backends that are supported on
+            Windows. One uses the Win32 and WGL APIs directly and the
+            other is built on top of SDL. You must choose one of the
+            backends when running the configure script using the
+            following argument:
+            <variablelist>
+              <varlistentry>
+                <term>--with-flavour=[win32/sdl]</term>
+                <listitem>
+                  <para>Select the Clutter backend; default=glx.
+                  </para>
+                </listitem>
+              </varlistentry>
+            </variablelist>
+            </para>
+      </section>
+
+      <section id='building-osx'>
+          <title>OSX</title>
+          <para>For developing an application with Clutter, the recommended
+          way of installing it using the <ulink href="http://www.macports.org/">MacPorts</ulink>
+          project, by simply invoking:</para>
+
+          <informalexample><programlisting>
+            $ sudo port install clutter
+          </programlisting></informalexample>
+
+          <para>on a terminal, after installing and updating MacPorts.</para>
+
+          <para>For developing Clutter itself, the recommended way of building
+          it OSX is to use <ulink href="http://live.gnome.org/Jhbuild">Jhbuild</ulink>,
+          following the documentation for building the GTK+ stack as shown
+          <ulink href="http://developer.imendio.com/projects/gtk-macosx/build-instructions">here</ulink>.</para>
+
+          <para>
+            Jhbuild depends on SVN, which can be installed on OSX by using
+            the <ulink href="http://www.macports.org/">MacPorts</ulink>
+            project.
+          </para>
+
+          <para>
+            XCode should also be installed, either from the OSX installation
+            disk or downloading it from the Apple website. It is recommended
+            to also install the X11 development files, even though Clutter
+            does not strictly depend on them.
+          </para>
+
+          <para>
+            The Clutter Quartz backend is built by passing the
+            <literal>--with-flavour=osx</literal> command line argument
+            to the configure script. If not passed, the GLX backend will
+            be built. By default, the Quartz backend depends on CoreGraphics
+            in order to load images into textures, but it can also depend
+            on GDK-Pixbuf or an internal, highly experimental PNG and JPEG
+            loader.
+          </para>
+
+          <para>
+            GTK-Doc is not working on OSX, so API reference generation
+            should also be disabled when building Clutter, by using
+            the <literal>--disable-docs</literal> and
+            <literal>--disable-gtk-doc</literal> command line argument
+            to the configure script.
+          </para>
+
+      </section>
+
+    </section>
+
+  </partintro>
+</part>
diff --git a/doc/reference/clutter/clutter-animation.sgml b/doc/reference/clutter/clutter-animation.xml
index 1e8515d64..1e8515d64 100644
--- a/doc/reference/clutter/clutter-animation.sgml
+++ b/doc/reference/clutter/clutter-animation.xml
diff --git a/doc/reference/clutter/clutter-docs.sgml b/doc/reference/clutter/clutter-docs.sgml
index c6ab98f96..bd7531838 100644
--- a/doc/reference/clutter/clutter-docs.sgml
+++ b/doc/reference/clutter/clutter-docs.sgml
@@ -2,9 +2,6 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
                "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
 <!ENTITY version SYSTEM "version.xml">
-<!ENTITY clutter-SubclassingActor SYSTEM "xml/subclassing-ClutterActor.sgml">
-<!ENTITY clutter-animation SYSTEM "xml/clutter-animation.sgml">
-<!ENTITY creating-your-own-behaviours SYSTEM "xml/creating-your-own-behaviours.sgml">
 ]>
 
 <book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
@@ -40,297 +37,9 @@
     </legalnotice>
   </bookinfo>
 
-  <part id="clutter">
-    <title>Clutter Overview</title>
-
-    <partintro>
-
-    <para>
-
-    Clutter is a GObject based library for creating fast, visually
-    rich, graphical user interfaces.
-
-    </para>
-
-    <para>
-
-    Clutter works by manipulating a scene-graph of 2D surfaces, or 'actors',
-    inside a 3D space.
-
-    </para>
-    <para>
-
-    #ClutterActor is the base class for such surfaces. All
-    #ClutterActor<!-- -->s can be positioned, scaled and rotated in 3D space.
-    In addition, other properties can be set, such as 2D clipping, children and
-    opacity. Tranforms applied to a parent actor also apply to any children.
-    Actors are also able to receive events.
-
-    </para>
-    <para>
-
-    Subclasses of #ClutterActor include #ClutterStage, #ClutterTexture,
-    #ClutterLabel, #ClutterRectangle, #ClutterEntry and
-    #ClutterGroup. #ClutterActor<!-- -->s are added to a parent, transformed
-    and then made visible.
-
-    </para>
-    <para>
-
-    #ClutterStage is the top level #ClutterActor - it's the representation
-    of a window, or framebuffer. It is created automatically when Clutter is
-    initialised. #ClutterStage is a #ClutterGroup, a class
-    implementing the #ClutterCointainer interface. Clutter currently
-    only supports a single stage.
-
-    </para>
-    <para>
-
-    #ClutterTimeline<!-- -->s provide the basis for Clutter's animation
-    utilities. Multiple timelines can be synchronised using #ClutterScore,
-    and #ClutterBehaviour and #ClutterEffect allow for the creation of
-    animation effects such as transitions.
-
-    </para>
-    <para>
-
-    Clutter further contains a number of utilities, including;
-    #ClutterScript - for loading 'UI definition' files formatted in
-    JSON, #ClutterShader - a class for applying GPU shaders to actors,
-    #ClutterModel - a utility class for MVC list type implementations
-    and #ClutterFixed - fixed point math utilities.
-
-    </para>
-
-    </partintro>
-  </part>
-
-  <part id="clutterbuilding">
-    <title>Building Clutter</title>
-
-    <partintro>
-
-    <section id='dependencies'>
-    <title>Clutter Dependencies</title>
-
-      <variablelist>
-        <varlistentry>
-          <term>GLib</term>
-          <listitem>
-            <para>A general-purpose utility library, not specific to
-            graphical user interfaces. GLib provides many useful data
-            types, macros, type conversions, string utilities, file
-            utilities, a main loop abstraction, and so on.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>GObject</term>
-          <listitem>
-            <para>The GLib Object System provides the required
-            implementations of a flexible, extensible and intentionally
-            easy to map (into other languages) object-oriented framework
-            for C.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>Pango</term>
-          <listitem>
-            <para>Pango is a library for laying out and rendering
-            text, with an emphasis on internationalization.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>GDK-Pixbuf</term>
-          <listitem>
-            <para>GDK-Pixbuf is a library for loading and manipulating
-            various image file formats.</para>
-          </listitem>
-          <term>Backend Windowing System Library</term>
-          <listitem>
-            <para>GLX, EGL (1.1), SDL, Cocoa (OS X) and WGL (Windows)</para>
-          </listitem>
-          <term>Graphics Rendering </term>
-          <listitem>
-            <para>Open GL (1.2+) ir Open GL ES (1.1) </para>
-          </listitem>
-        </varlistentry>
-      </variablelist>
-
-    </section>
-
-    <section id='building-instructions'>
-      <title>Platform-specific instructions</title>
-
-      <section id='building-linux'>
-        <title>Linux</title>
-
-        <para>If you are using Debian or Ubuntu, you can install pre-compiled
-        binary packages the normal Debian way following the instructions at
-        <ulink type="http" url="http://debian.o-hand.com/">
-        http://debian.o-hand.com/</ulink>.
-        </para>
-
-        <para>To build Clutter clutter from sources, get the latest source
-        archives from <ulink type="http"
-        url="http://www.clutter-project.org/sources/">
-        http://www.clutter-project.org/sources/</ulink>. Once you have extracted
-        the sources from the archive execute the following commands in the
-        top-level directory:
-        </para>
-
-        <literallayout>
-    ./configure
-    make
-    make install
-        </literallayout>
-
-        <para>You can configure the build with number of additional arguments
-        passed to the configure script, the full list of which can be obtained
-        by running ./configure --help. The following arguments are specific to
-        Clutter:
-
-            <variablelist>
-              <varlistentry>
-                <term>--enable-debug=[no/minimum/yes]</term>
-                <listitem>
-                  <para>Turns on debugging. Possible values are: yes -  all
-                  glib asserts, checks and runtime clutter verbose messages;
-                 minimum - just glib cast checks and runtime clutter verbose
-                 messagaes; no - no glib asserts or checks and no runtime
-                 clutter verbose messages; default=yes.
-                 </para>
-                </listitem>
-              </varlistentry>
-
-              <varlistentry>
-                <term>--enable-maintainer-flags=[no/yes]</term>
-                <listitem>
-                  <para>Use strict compiler flags; default=no.
-                  </para>
-                </listitem>
-              </varlistentry>
-
-              <varlistentry>
-                <term>--enable-gtk-doc</term>
-                <listitem>
-                  <para>Use gtk-doc to build documentation; default=no.
-                  </para>
-                </listitem>
-              </varlistentry>
-
-              <varlistentry>
-                <term>--enable-manual=[no/yes]</term>
-                <listitem>
-                  <para>Build application developers manual; requires jw and
-                  xmlto binaries; default=no.
-                  </para>
-                </listitem>
-              </varlistentry>
-
-              <varlistentry>
-                <term>--with-flavour=[glx/eglx/eglnative/sdl]</term>
-                <listitem>
-                  <para>Select the Clutter backend; default=glx.
-                  </para>
-                </listitem>
-              </varlistentry>
-            </variablelist>
-
-            </para>
-
-      </section>
-
-      <section id='building-windows'>
-          <title>Windows</title>
-            <para>
-            The recommended way of building Clutter for Windows is using the
-            <ulink type="http" url="http://www.mingw.org/">mingw</ulink> tool
-            chain. One option is to cross-compile Clutter under Linux -- you
-            can use the script found in the <filename>build/mingw/</filename>
-            directory to simplify the process (the script takes care of setting
-            up the necessary dependencies).
-            </para>
-
-            <para>
-            If you wish to build Clutter using mingw direcly under Windows, you
-            can do so the normal *nix way (described above) using the mingw
-            POSIX shell. Should you prefer to use Microsoft Visual Studio, a
-            project file for MSVC 2005 is located in the
-            <filename>build/msvc_2k5/</filename> directory. In either case, you
-            will need to first install the required dependencies.
-            </para>
-            <para>
-            There are currently two backends that are supported on
-            Windows. One uses the Win32 and WGL APIs directly and the
-            other is built on top of SDL. You must choose one of the
-            backends when running the configure script using the
-            following argument:
-            <variablelist>
-              <varlistentry>
-                <term>--with-flavour=[win32/sdl]</term>
-                <listitem>
-                  <para>Select the Clutter backend; default=glx.
-                  </para>
-                </listitem>
-              </varlistentry>
-            </variablelist>
-            </para>
-      </section>
-
-      <section id='building-osx'>
-          <title>OSX</title>
-          <para>For developing an application with Clutter, the recommended
-          way of installing it using the <ulink href="http://www.macports.org/">MacPorts</ulink>
-          project, by simply invoking:</para>
-
-          <informalexample><programlisting>
-            $ sudo port install clutter
-          </programlisting></informalexample>
-
-          <para>on a terminal, after installing and updating MacPorts.</para>
-
-          <para>For developing Clutter itself, the recommended way of building
-          it OSX is to use <ulink href="http://live.gnome.org/Jhbuild">Jhbuild</ulink>,
-          following the documentation for building the GTK+ stack as shown
-          <ulink href="http://developer.imendio.com/projects/gtk-macosx/build-instructions">here</ulink>.</para>
-
-          <para>
-            Jhbuild depends on SVN, which can be installed on OSX by using
-            the <ulink href="http://www.macports.org/">MacPorts</ulink>
-            project.
-          </para>
-
-          <para>
-            XCode should also be installed, either from the OSX installation
-            disk or downloading it from the Apple website. It is recommended
-            to also install the X11 development files, even though Clutter
-            does not strictly depend on them.
-          </para>
-
-          <para>
-            The Clutter Quartz backend is built by passing the
-            <literal>--with-flavour=osx</literal> command line argument
-            to the configure script. If not passed, the GLX backend will
-            be built. By default, the Quartz backend depends on CoreGraphics
-            in order to load images into textures, but it can also depend
-            on GDK-Pixbuf or an internal, highly experimental PNG and JPEG
-            loader.
-          </para>
-
-          <para>
-            GTK-Doc is not working on OSX, so API reference generation
-            should also be disabled when building Clutter, by using
-            the <literal>--disable-docs</literal> and
-            <literal>--disable-gtk-doc</literal> command line argument
-            to the configure script.
-          </para>
-
-      </section>
-   </section>
-
-    </partintro>
-  </part>
+  <xi:include href="xml/clutter-overview.xml"/>
 
+  <xi:include href="xml/building-clutter.xml"/>
 
   <part id="clutterbase">
     <title>Clutter Core Reference</title>
@@ -453,11 +162,11 @@
       developing with Clutter.</para>
     </partintro>
 
-    &clutter-SubclassingActor;
+    <xi:include href="subclassing-ClutterActor.xml"/>
 
-    &clutter-animation;
+    <xi:include href="clutter-animation.xml"/>
 
-    &creating-your-own-behaviours;
+    <xi:include href="creating-behaviours.xml"/>
 
   </part>
 
diff --git a/doc/reference/clutter/clutter-overview.xml b/doc/reference/clutter/clutter-overview.xml
new file mode 100644
index 000000000..a015fd22a
--- /dev/null
+++ b/doc/reference/clutter/clutter-overview.xml
@@ -0,0 +1,53 @@
+<part id="clutter-overview">
+  <partinfo>
+    <author>
+      <firstname>Emmanuele</firstname>
+      <surname>Bassi</surname>
+      <affiliation>
+        <address>
+          <email>ebassi@openedhand.com</email>
+        </address>
+      </affiliation>
+    </author>
+  </partinfo>
+
+  <title>Overview</title>
+
+  <partintro>
+
+    <para>Clutter is a GObject based library for creating fast, visually
+    rich, graphical user interfaces.</para>
+
+    <para>Clutter works by manipulating a scene-graph of 2D surfaces, or
+    'actors', inside a 3D space.</para>
+
+    <para>#ClutterActor is the base class for such surfaces. All
+    #ClutterActor<!-- -->s can be positioned, scaled and rotated in 3D space.
+    In addition, other properties can be set, such as 2D clipping, children and
+    opacity. Tranforms applied to a parent actor also apply to any children.
+    Actors are also able to receive events.</para>
+
+    <para>Subclasses of #ClutterActor include #ClutterStage, #ClutterTexture,
+    #ClutterLabel, #ClutterRectangle, #ClutterEntry and
+    #ClutterGroup. #ClutterActor<!-- -->s are added to a parent, transformed
+    and then made visible.</para>
+
+    <para>#ClutterStage is the top level #ClutterActor - it's the
+    representation of a window, or framebuffer. It is created automatically
+    when Clutter is initialised. #ClutterStage is a #ClutterGroup, a class
+    implementing the #ClutterCointainer interface.</para>
+
+    <para>#ClutterTimeline<!-- -->s provide the basis for Clutter's animation
+    utilities. Multiple timelines can be synchronised using #ClutterScore,
+    and #ClutterBehaviour and #ClutterEffect allow for the creation of
+    animation effects such as transitions.</para>
+
+    <para>Clutter further contains a number of utilities, including;
+    #ClutterScript - for loading 'UI definition' files formatted in
+    <ulink type="http" url="http://json.org">JSON</ulink>, #ClutterShader - a
+    class for applying GPU shaders to actors, #ClutterModel - a utility class
+    for MVC list type implementations, and fixed point math utilities.</para>
+
+  </partintro>
+
+</part>
diff --git a/doc/reference/clutter/creating-your-own-behaviours.sgml b/doc/reference/clutter/creating-behaviours.xml
index 53ee8e2a0..53ee8e2a0 100644
--- a/doc/reference/clutter/creating-your-own-behaviours.sgml
+++ b/doc/reference/clutter/creating-behaviours.xml
diff --git a/doc/reference/clutter/subclassing-ClutterActor.sgml b/doc/reference/clutter/subclassing-ClutterActor.xml
index 50634fbaa..50634fbaa 100644
--- a/doc/reference/clutter/subclassing-ClutterActor.sgml
+++ b/doc/reference/clutter/subclassing-ClutterActor.xml