diff --git a/docs/de/appendixes/resources.xml b/docs/de/appendixes/resources.xml
index 87b35723..e1174c4a 100644
--- a/docs/de/appendixes/resources.xml
+++ b/docs/de/appendixes/resources.xml
@@ -3,10 +3,10 @@
 <chapter id="resources">
 	<title>Weiterf&uuml;hrende Informationen</title>
 	<para>
-	Smarty's Homepage erreicht man unter http://smarty.php.net/.
-	Sie k&ouml;nnen der Smarty Mailingliste beitreten in dem
-	sie ein E-mail an smarty-general-subscribe@lists.php.net senden. Das Archiv
-	der Liste ist hier http://marc.theaimsgroup.com/?l=smarty&amp;r=1&amp;w=2 einsehbar.
+ 	Smarty's Homepage erreicht man unter &url.smarty;.
+ 	Sie k&ouml;nnen der Smarty Mailingliste beitreten in dem
+ 	sie ein E-mail an &ml.general.sub;. Das Archiv	der Liste
+  ist hier &url.ml.archive; einsehbar.
 	</para>
 </chapter>
 <!-- Keep this comment at the end of the file
@@ -28,4 +28,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
\ No newline at end of file
+-->
diff --git a/docs/en/appendixes/resources.xml b/docs/en/appendixes/resources.xml
index b095f1ea..529b0696 100644
--- a/docs/en/appendixes/resources.xml
+++ b/docs/en/appendixes/resources.xml
@@ -3,10 +3,10 @@
  <chapter id="resources">
   <title>Resources</title>
   <para>
-   Smarty's homepage is located at http://smarty.php.net/.
+   Smarty's homepage is located at &url.smarty;.
    You can join the mailing list by sending an e-mail to
-   smarty-general-subscribe@lists.php.net. An archive of the mailing list can be
-   viewed at http://marc.theaimsgroup.com/?l=smarty&amp;r=1&amp;w=2
+   &ml.general.sub;. An archive of the mailing list can 
+   be viewed at &url.ml.archive;
   </para>
 </chapter>
 <!-- Keep this comment at the end of the file
@@ -28,4 +28,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
\ No newline at end of file
+-->
diff --git a/docs/entities/global.ent b/docs/entities/global.ent
new file mode 100644
index 00000000..23512a16
--- /dev/null
+++ b/docs/entities/global.ent
@@ -0,0 +1,18 @@
+<!--
+ $Id$
+
+ Contains global "macros" for all the XML documents.
+ -->
+
+<!ENTITY url.smarty     'http://smarty.php.net/'>
+<!ENTITY url.ml.archive 'http://marc.theaimsgroup.com/?l=smarty&amp;r=1&amp;w=2'>
+<!ENTITY ml.general.sub 'smarty-general-subscribe@lists.php.net'>
+
+
+<!-- The three special language constants -->
+<!ENTITY true  '<constant>TRUE</constant>'>
+<!ENTITY false '<constant>FALSE</constant>'>
+<!ENTITY null  '<constant>NULL</constant>'>
+<!-- use <type>NULL</type> if you're talking about the _type_ NULL,
+     use &null; if it's about the _value_ NULL
+ -->
diff --git a/docs/fr/appendixes/resources.xml b/docs/fr/appendixes/resources.xml
index 83338923..67423b29 100644
--- a/docs/fr/appendixes/resources.xml
+++ b/docs/fr/appendixes/resources.xml
@@ -3,11 +3,11 @@
 <chapter id="resources">
 	<title>Ressources</title>
 	<para>
-	La page Web de Smarty se trouve à l'adresse suivante : http://smarty.php.net/.
-	Vous pouvez souscrire à la mailing liste en envoyant un email à
-	smarty-general-subscribe@lists.php.net.
-	Les archives de la mailing list se trouvent à l'adresse suivante :
-	http://marc.theaimsgroup.com/?l=smarty&amp;r=1&amp;w=2
+	 La page Web de Smarty se trouve à l'adresse suivante : &url.smarty;
+	 Vous pouvez souscrire à la mailing liste en envoyant un email à
+	 &ml.general.sub;.
+	 Les archives de la mailing list se trouvent à l'adresse suivante :
+	 &url.ml.archive;
 	</para>
 </chapter>
 <!-- Keep this comment at the end of the file
@@ -29,4 +29,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
\ No newline at end of file
+-->
diff --git a/docs/manual.xml.in b/docs/manual.xml.in
index 0a6c7073..82ac80ef 100644
--- a/docs/manual.xml.in
+++ b/docs/manual.xml.in
@@ -13,7 +13,10 @@
 
 %language-defs.default;
 
+<!-- All global entities for the XML files -->
+<!ENTITY % global.entities  SYSTEM "entities/global.ent">
 
+%global.entities;
 
 <!ENTITY bookinfo SYSTEM "@LANG@/bookinfo.xml">
 <!ENTITY preface SYSTEM "@LANG@/preface.xml">
diff --git a/docs/pt_BR/appendixes/resources.xml b/docs/pt_BR/appendixes/resources.xml
index 5cae4441..853d8212 100644
--- a/docs/pt_BR/appendixes/resources.xml
+++ b/docs/pt_BR/appendixes/resources.xml
@@ -3,10 +3,10 @@
 <chapter id="resources">
 	<title>Recursos</title>
 	<para>
-	A homepage do Smarty está localizada em http://smarty.php.net/.
-	Você pode entrar na lista de email enviando um e-mail para
-	smarty-general-subscribe@lists.php.net. Um arquivo da lista de e-mail pode ser
-	visto em http://marc.theaimsgroup.com/?l=smarty&amp;r=1&amp;w=2
+ 	A homepage do Smarty está localizada em &url.smarty;.
+ 	Você pode entrar na lista de email enviando um e-mail para
+ 	&ml.general.sub;. Um arquivo da lista de e-mail pode ser
+ 	visto em &url.ml.archive;
 	</para>
 </chapter>
 <!-- Keep this comment at the end of the file
@@ -28,4 +28,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
\ No newline at end of file
+-->