diff --git a/features/safe-mode.xml b/features/safe-mode.xml
index e465de0e98..e95cf0f5c4 100644
--- a/features/safe-mode.xml
+++ b/features/safe-mode.xml
@@ -1,4 +1,4 @@
- <!-- $Revision: 1.4 $ -->
+ <!-- $Revision: 1.5 $ -->
  <chapter id="features.safe-mode">
   <title>Safe mode</title>
 
@@ -203,6 +203,26 @@ Warning: readfile() has been disabled for security reasons in
         <entry><function>getallheaders</function></entry>
         <entry>??</entry>
        </row>
+       <row>
+        <entry><function>exec</function></entry>
+        <entry>??</entry>
+       </row>
+       <row>
+        <entry><function>system</function></entry>
+        <entry>??</entry>
+       </row>
+       <row>
+        <entry><function>passthru</function></entry>
+        <entry>??</entry>
+       </row>
+       <row>
+        <entry><function>mail</function></entry>
+        <entry>??</entry>
+       </row>
+       <row>
+        <entry><link linkend="language.operators.execution">backtick operator</link></entry>
+        <entry>??</entry>
+       </row>
        <row>
         <entry>Any function that uses 
          <filename>php4/main/fopen_wrappers.c</filename>