diff --git a/reference/yaf/ini.xml b/reference/yaf/ini.xml
index 0b0d86f94f..1cfc0e02b7 100644
--- a/reference/yaf/ini.xml
+++ b/reference/yaf/ini.xml
@@ -132,12 +132,12 @@
      <listitem>
       <para>
         When this value is On, if <classname>Yaf_Loader</classname> can not
-        find a class, it will return FALSE, then give chance to other auto
+        find a class, it will return &false;, then give chance to other auto
         load function to be called.      
       </para>
       <para>
         When this value is Off, if <classname>Yaf_Loader</classname> can not
-        find a class, it will return TRUE, and make the class autoloading
+        find a class, it will return &true;, and make the class autoloading
         failed immediately.
       </para>
       <note>
@@ -150,7 +150,8 @@
       </note>
       <para>
         When this value is Off(default),
-        <methodname>Yaf_Loader::autoload</methodname> will always return TRUE.
+        <methodname>Yaf_Loader::autoload</methodname> will always return
+        &true;.
       </para>
      </listitem>
     </varlistentry>
diff --git a/reference/yaf/yaf-config-ini.xml b/reference/yaf/yaf-config-ini.xml
index fd9cabf48f..13829173d9 100644
--- a/reference/yaf/yaf-config-ini.xml
+++ b/reference/yaf/yaf-config-ini.xml
@@ -25,7 +25,7 @@
    <para>
    Yaf_Config_Ini utilizes the » parse_ini_file() PHP function. Please review
    this documentation to be aware of its specific behaviors, which propagate
-   to Yaf_Config_Ini, such as how the special values of "TRUE", "FALSE",
+   to Yaf_Config_Ini, such as how the special values of "&true;", "&false;",
    "yes", "no", and "NULL" are handled. 
    </para>
   </note>
diff --git a/reference/yaf/yaf-loader.xml b/reference/yaf/yaf-loader.xml
index c3b4813ac9..aeb27155b5 100644
--- a/reference/yaf/yaf-loader.xml
+++ b/reference/yaf/yaf-loader.xml
@@ -25,9 +25,9 @@
     failed, depend on <link
      linkend="ini.yaf.use-spl-autoload">yaf.use_spl_auload</link>, if this
     config is On <methodname>Yaf_Loader::autoload</methodname> will return 
-    FALSE, thus give the chance to other autoload function. if it is Off 
+    &false;, thus give the chance to other autoload function. if it is Off 
     (by default), <methodname>Yaf_Loader::autoload</methodname> will return 
-    TRUE, and more important is that a very usefull warning will be triggerd 
+    &true;, and more important is that a very usefull warning will be triggerd 
     (very usefull to find out why a class could not be loaded). 
     <note>
      <para>
diff --git a/reference/yaf/yaf-route-simple.xml b/reference/yaf/yaf-route-simple.xml
index 6c243e5367..e0b00d3652 100644
--- a/reference/yaf/yaf-route-simple.xml
+++ b/reference/yaf/yaf-route-simple.xml
@@ -20,7 +20,8 @@
      module, what key is controller, and what key is action.
    </para>
    <para>
-    <methodname>Yaf_Route_Simple::route</methodname> will always return TRUE,
+    <methodname>Yaf_Route_Simple::route</methodname> will always return
+    &true;,
     so it is important put <classname>Yaf_Route_Simple</classname> in the front of the Route stack,
     otherwise all the other routes will not be called.
    </para>
diff --git a/reference/yaf/yaf_dispatcher/autorender.xml b/reference/yaf/yaf_dispatcher/autorender.xml
index 29483f2b09..f8bcd868ad 100644
--- a/reference/yaf/yaf_dispatcher/autorender.xml
+++ b/reference/yaf/yaf_dispatcher/autorender.xml
@@ -16,10 +16,10 @@
   <para>
    <classname>Yaf_Dispatcher</classname> will render automatically after 
    dispatches a incoming request, you can prevent the rendering by calling
-   this method with <parameter>flag</parameter> TRUE
+   this method with <parameter>flag</parameter> &true;
    <note>
      <para>
-     you can simply return FALSE in a action to prevent the auto-rendering of
+     you can simply return &false; in a action to prevent the auto-rendering of
      that action
     </para>
    </note>
diff --git a/reference/yaf/yaf_dispatcher/disableview.xml b/reference/yaf/yaf_dispatcher/disableview.xml
index e83162830f..55bc6c99a7 100644
--- a/reference/yaf/yaf_dispatcher/disableview.xml
+++ b/reference/yaf/yaf_dispatcher/disableview.xml
@@ -17,7 +17,7 @@
     disable view engine, used in some app that user will output by theirself
     <note>
      <para>
-     you can simply return FALSE in a action to prevent the auto-rendering of
+     you can simply return &false; in a action to prevent the auto-rendering of
      that action
     </para>
     </note>
diff --git a/reference/yaf/yaf_route_interface/route.xml b/reference/yaf/yaf_route_interface/route.xml
index 08bf3cfc64..7d238630a5 100644
--- a/reference/yaf/yaf_route_interface/route.xml
+++ b/reference/yaf/yaf_route_interface/route.xml
@@ -18,7 +18,7 @@
     that a custom route should implement.
   </para>
   <para>
-    if this method return TRUE, then the route process will be end. otherwise,
+    if this method return &true;, then the route process will be end. otherwise,
     <classname>Yaf_Router</classname> will call next route in the route stack
     to route request.
   </para>
diff --git a/reference/yaf/yaf_route_regex/construct.xml b/reference/yaf/yaf_route_regex/construct.xml
index 5dac5a885a..e243d4b221 100644
--- a/reference/yaf/yaf_route_regex/construct.xml
+++ b/reference/yaf/yaf_route_regex/construct.xml
@@ -33,7 +33,7 @@
      <para>
        A complete Regex pattern, will be used to match a request uri, if
        doesn't matched, <classname>Yaf_Route_Regex</classname> will return
-       FALSE.
+       &false;.
      </para>
     </listitem>
    </varlistentry>
diff --git a/reference/yaf/yaf_route_regex/route.xml b/reference/yaf/yaf_route_regex/route.xml
index d3ad68116e..9e06756581 100644
--- a/reference/yaf/yaf_route_regex/route.xml
+++ b/reference/yaf/yaf_route_regex/route.xml
@@ -40,7 +40,7 @@
   <para>
    If the pattern given by the first parameter of 
    <methodname>Yaf_Route_Regex::_construct</methodname> matche the request
-   uri, return TRUE, otherwise return FALSE.
+   uri, return &true;, otherwise return &false;.
   </para>
  </refsect1>
 
diff --git a/reference/yaf/yaf_route_rewrite/construct.xml b/reference/yaf/yaf_route_rewrite/construct.xml
index 8636d8b9e2..a29aca78fa 100644
--- a/reference/yaf/yaf_route_rewrite/construct.xml
+++ b/reference/yaf/yaf_route_rewrite/construct.xml
@@ -32,7 +32,7 @@
      <para>
        A pattern, will be used to match a request uri, if
        doesn't matched, <classname>Yaf_Route_Rewrite</classname> will return
-       FALSE.
+       &false;.
      </para>
     </listitem>
    </varlistentry>
diff --git a/reference/yaf/yaf_route_simple/construct.xml b/reference/yaf/yaf_route_simple/construct.xml
index a10a6dac10..e8be66bc74 100644
--- a/reference/yaf/yaf_route_simple/construct.xml
+++ b/reference/yaf/yaf_route_simple/construct.xml
@@ -58,7 +58,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   Always return TRUE.
+   Always return &true;.
   </para>
  </refsect1>
 
diff --git a/reference/yaf/yaf_route_simple/route.xml b/reference/yaf/yaf_route_simple/route.xml
index 62219278bb..9b85e1f6cb 100644
--- a/reference/yaf/yaf_route_simple/route.xml
+++ b/reference/yaf/yaf_route_simple/route.xml
@@ -38,7 +38,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   always be TRUE
+   always be &true;
   </para>
  </refsect1>
 
diff --git a/reference/yaf/yaf_route_static/route.xml b/reference/yaf/yaf_route_static/route.xml
index 7d752cdd40..593632548b 100644
--- a/reference/yaf/yaf_route_static/route.xml
+++ b/reference/yaf/yaf_route_static/route.xml
@@ -38,7 +38,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   always be TRUE
+   always be &true;
   </para>
  </refsect1>
 
diff --git a/reference/yaf/yaf_route_supervar/route.xml b/reference/yaf/yaf_route_supervar/route.xml
index 8b2a411fe7..f9cf4a8182 100644
--- a/reference/yaf/yaf_route_supervar/route.xml
+++ b/reference/yaf/yaf_route_supervar/route.xml
@@ -39,8 +39,8 @@
   &reftitle.returnvalues;
   <para>
     If there is a key(which was defined in
-    <methodname>Yaf_Route_Supervar::__construct</methodname>) in $_GET,  return TRUE.
-    otherwise return FALSE.
+    <methodname>Yaf_Route_Supervar::__construct</methodname>) in $_GET, return &true;.
+    otherwise return &false;.
   </para>
  </refsect1>
 
diff --git a/reference/yaf/yaf_router/addroute.xml b/reference/yaf/yaf_router/addroute.xml
index a69022fedb..2a662fe00d 100644
--- a/reference/yaf/yaf_router/addroute.xml
+++ b/reference/yaf/yaf_router/addroute.xml
@@ -20,7 +20,7 @@
   </para>
   <para>
     the newer route will be called before the older(route stack), and if the newer router return
-    TRUE, the router process will be end. otherwise, the older one will be
+    &true;, the router process will be end. otherwise, the older one will be
     called.
   </para>
  </refsect1>