diff --git a/cacheoutput.php b/cacheoutput.php
index 69dd55b..9496117 100644
--- a/cacheoutput.php
+++ b/cacheoutput.php
@@ -1,7 +1,10 @@
 <?php
 /** This class permit to cache the ouptut of a code. If the cache is already
     available, use it.
-    It resend the headers as the ouptut send them */
+    It resend the headers as the ouptut send them
+    Use it by :
+       $c = new cacheoutput ("URL");
+    Don't forget to define a variable or the cache saved is always empty */
 class cacheoutput
 {
   /** Record if the saving of pages is on going */
@@ -17,7 +20,7 @@ class cacheoutput
 
   /** 
       @param string $id The cache identifier
-      @param integer|null $ttl The cache Time to Leave in seconds (3600s by
+      @param integer|null $ttl The cache Time to Leave in seconds (60s by
                                default)
       @param string|null $method The cache method to use */
   public function __construct ($id, $ttl=60, $method="file")