diff --git a/reference/classobj/functions/get-class-methods.xml b/reference/classobj/functions/get-class-methods.xml
index 9f83c3daba..befc2386cd 100644
--- a/reference/classobj/functions/get-class-methods.xml
+++ b/reference/classobj/functions/get-class-methods.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/classobj.xml, last change in rev 1.2 -->
   <refentry id="function.get-class-methods">
    <refnamediv>
@@ -39,17 +39,17 @@ $class_methods = get_class_methods($my_class); // see below the full example
 class myclass {
     // constructor
     function myclass() {
-        return(true);
+        return(TRUE);
     }
     
     // method 1
     function myfunc1() {
-        return(true);
+        return(TRUE);
     }
 
     // method 2
     function myfunc2() {
-        return(true);
+        return(TRUE);
     }
 }
 
diff --git a/reference/classobj/functions/get-class-vars.xml b/reference/classobj/functions/get-class-vars.xml
index e5ccee9133..7f4c0a0450 100644
--- a/reference/classobj/functions/get-class-vars.xml
+++ b/reference/classobj/functions/get-class-vars.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/classobj.xml, last change in rev 1.1 -->
   <refentry id="function.get-class-vars">
    <refnamediv>
@@ -40,7 +40,7 @@ class myclass {
     
     // constructor
     function myclass() {
-        return(true);
+        return(TRUE);
     }
 
 }
diff --git a/reference/classobj/functions/is-a.xml b/reference/classobj/functions/is-a.xml
index d8f54bca83..e273b908b7 100644
--- a/reference/classobj/functions/is-a.xml
+++ b/reference/classobj/functions/is-a.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/classobj.xml, last change in rev 1.33 -->
  <refentry id="function.is-a">
    <refnamediv>
     <refname>is_a</refname>
     <refpurpose>
-     Returns true if the object is of this class or has this class as 
+     Returns &true; if the object is of this class or has this class as 
      one of its parents
     </refpurpose>
    </refnamediv>
diff --git a/reference/classobj/functions/is-subclass-of.xml b/reference/classobj/functions/is-subclass-of.xml
index 1bb500eeba..f1c6ce109a 100644
--- a/reference/classobj/functions/is-subclass-of.xml
+++ b/reference/classobj/functions/is-subclass-of.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/classobj.xml, last change in rev 1.4 -->
  <refentry id="function.is-subclass-of">
    <refnamediv>
     <refname>is_subclass_of</refname>
     <refpurpose>
-     Returns true if the object has this class as one of its parents
+     Returns &true; if the object has this class as one of its parents
     </refpurpose>
    </refnamediv>
    <refsect1>