diff --git a/functions/math.xml b/functions/math.xml
index 3c49b72a06..3a3f6f0701 100644
--- a/functions/math.xml
+++ b/functions/math.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.65 $ -->
+<!-- $Revision: 1.66 $ -->
  <reference id="ref.math">
   <title>Mathematical Functions</title>
   <titleabbrev>Math</titleabbrev>
@@ -145,6 +145,16 @@
      otherwise it is <type>integer</type> (as <type>float</type> usually has a
      bigger value range than <type>integer</type>).
     </para>
+    <example>
+     <title><function>abs</function> example</title>
+     <programlisting role="php">
+<![CDATA[
+$abs = abs(-4.2); // $abs = 4.2; (double/float)
+$abs2 = abs(5);   // $abs2 = 5; (integer)
+$abs3 = abs(-5);  // $abs3 = 5; (integer)
+]]>
+     </programlisting>
+    </example>
    </refsect1>
   </refentry>
 
@@ -632,7 +642,7 @@ $ten = ceil(9.999); // $ten = 10.0;
     </funcsynopsis>
     <simpara>
      Returns the next lowest integer value by rounding down
-     <parameter>value</parameter> if neccessary. 
+     <parameter>value</parameter> if necessary. 
      The return value of <function>floor</function> is still of type
      <type>float</type> because the value range of <type>float</type> is 
      usually bigger than that of <type>int</type>.