diff --git a/cli.php b/cli.php
index 43fb71a..4c56e96 100644
--- a/cli.php
+++ b/cli.php
@@ -13,6 +13,7 @@ class cli
     require ("domframework/cli.php");
     $cli = new cli;
     $cli->run(); */
+  private $EXPERT = false;
 
   public function __construct ()
   {
@@ -49,6 +50,12 @@ class cli
     file_put_contents ("php://stderr", sprintf ("%-17s", $severity)." ".
                                        "$errstr [".basename ($errfile) .
                                        ":$errline]\n");
+    if ($this->EXPERT)
+    {
+      $e = new Exception;
+      file_put_contents ("php://stderr",
+                         print_r ($e->getTraceAsString(), TRUE)."\n");
+    }
   }
 
   public function run ()
@@ -83,20 +90,20 @@ class cli
       exit;
     }
 
-    $EXPERT = FALSE;
+    $this->EXPERT = FALSE;
     if (isset ($argv[0]) && $argv[0] === "-expert")
     {
-      $EXPERT = TRUE;
+      $this->EXPERT = TRUE;
       array_shift ($argv);
     }
 
     // List the controllers and the models if the expert mode is activated
     $files = glob ("controllers/*.php");
-    if ($EXPERT)
+    if ($this->EXPERT)
       $files = array_merge ($files, glob ("models/*.php"));
-    if (count ($files) === 0 && $EXPERT === FALSE)
+    if (count ($files) === 0 && $this->EXPERT === FALSE)
       die ("No controllers available in ".getcwd()."\n");
-    if (count ($files) === 0 && $EXPERT === TRUE)
+    if (count ($files) === 0 && $this->EXPERT === TRUE)
       die ("No controllers/models available in ".getcwd()."\n");
     foreach ($files as $file)
       $classes[$file] = substr (strstr ($file, "_"), 1, -4);
@@ -115,7 +122,7 @@ class cli
       echo "List of classes available :\n";
       echo "    ".implode ("\n    ", $classes)."\n";
       echo "Usage : ".$launcher;
-      if ($EXPERT) echo " -expert";
+      if ($this->EXPERT) echo " -expert";
       echo " -listmethods <class>\n";
       exit;
     }
@@ -299,7 +306,7 @@ class cli
     catch (Exception $e)
     {
       file_put_contents("php://stderr", $e->getMessage()."\n");
-      if ($EXPERT)
+      if ($this->EXPERT)
         file_put_contents ("php://stderr", $e->getTraceAsString()."\n");
     }
     exit;