diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index f8e2bf4b496..449c6c6ad22 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -1425,12 +1425,9 @@ if ($id > 0 || ! empty($ref))
 	}
 
 	print '<table id="tablelines" class="noborder" width="100%">';
-
-	if (!empty($object->lines))
-	{
-		$object->print_title_list();
-		$object->printLinesList(0,$mysoc,$soc);
-	}
+	
+	// Show object lines
+	if (! empty($object->lines)) $object->printObjectLines(0,$mysoc,$soc);
 
 	/*
 	 * Form to add new line
@@ -1442,13 +1439,13 @@ if ($id > 0 || ! empty($ref))
 			$var=true;
 
 			// Add free products/services
-			$object->showAddFreeProductForm(0,$mysoc,$soc);
+			$object->formAddFreeProduct(0,$mysoc,$soc);
 
 			// Add predefined products/services
 			if ($conf->product->enabled || $conf->service->enabled)
 			{
 				$var=!$var;
-				$object->showAddPredefinedProductForm(0,$mysoc,$soc);
+				$object->formAddPredefinedProduct(0,$mysoc,$soc);
 			}
 
 			// Hook of thirdparty module
diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index 9b007d28c4b..fced62b1979 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -1377,8 +1377,7 @@ if ($_GET['action'] == 'create' && $user->rights->commande->creer)
         print_titre($title);
 
         print '<table class="noborder" width="100%">';
-
-        $objectsrc->printOriginTitleList();
+        
         $objectsrc->printOriginLinesList($object);
 
         print '</table>';
@@ -1783,13 +1782,8 @@ else
 
             print '<table id="tablelines" class="noborder" width="100%">';
 
-            if (!empty($object->lines))
-            {
-                $object->print_title_list();
-                $object->printLinesList(1,$mysoc,$soc);
-            }
-
-            $numlines=sizeof($object->lines);
+            // Show object lines
+            if (! empty($object->lines)) $object->printObjectLines(0,$mysoc,$soc);
 
             /*
              * Form to add new line
@@ -1800,13 +1794,13 @@ else
                 {
                     $var=true;
 
-                    $object->showAddFreeProductForm(1,$mysoc,$soc);
+                    $object->formAddFreeProduct(1,$mysoc,$soc);
 
                     // Add predefined products/services
                     if ($conf->product->enabled || $conf->service->enabled)
                     {
                         $var=!$var;
-                        $object->showAddPredefinedProductForm(1,$mysoc,$soc);
+                        $object->formAddPredefinedProduct(1,$mysoc,$soc);
                     }
 
                     // Hook of thirdparty module
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 9a1d340c65e..a1ac40d7a62 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -1816,7 +1816,6 @@ if ($_GET['action'] == 'create')
 
 		print '<table class="noborder" width="100%">';
 
-		$objectsrc->printOriginTitleList();
 		$objectsrc->printOriginLinesList($object);
 
 		print '</table>';
@@ -2534,11 +2533,8 @@ else
 
 			print '<table id="tablelines" class="noborder" width="100%">';
 
-		    if (!empty($object->lines))
-            {
-                $object->print_title_list();
-                $object->printLinesList(1,$mysoc,$soc);
-            }
+		    // Show object lines
+		    if (! empty($object->lines)) $object->printObjectLines(0,$mysoc,$soc);
 
 			/*
 			 * Form to add new line
@@ -2547,13 +2543,13 @@ else
 			{
 				$var=true;
 
-				$object->showAddFreeProductForm(1,$mysoc,$soc);
+				$object->formAddFreeProduct(1,$mysoc,$soc);
 
 				// Add predefined products/services
 				if ($conf->product->enabled || $conf->service->enabled)
 				{
 					$var=!$var;
-					$object->showAddPredefinedProductForm(1,$mysoc,$soc);
+					$object->formAddPredefinedProduct(1,$mysoc,$soc);
 				}
 
 				// Hook of thirdparty module
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 2db3fba3896..9074ec5ff18 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -1328,7 +1328,7 @@ class CommonObject
 	 *  But for the moment we don't know if it'st possible as we keep a method available on overloaded objects.
      *  @param          $dateSelector       1=Show also date range input fields
 	 */
-	function showAddPredefinedProductForm($dateSelector,$seller,$buyer)
+	function formAddPredefinedProduct($dateSelector,$seller,$buyer)
 	{
 		global $conf,$langs,$object;
 		global $html,$bcnd,$var;
@@ -1343,7 +1343,7 @@ class CommonObject
      *  But for the moment we don't know if it'st possible as we keep a method available on overloaded objects.
      *  @param          $dateSelector       1=Show also date range input fields
      */
-	function showAddFreeProductForm($dateSelector,$seller,$buyer)
+	function formAddFreeProduct($dateSelector,$seller,$buyer)
 	{
 		global $conf,$langs,$object;
 		global $html,$bcnd,$var;
@@ -1403,14 +1403,17 @@ class CommonObject
 	}
 
 	/**
-	 * 	Return HTML table with title list
+	 * 	Return HTML with object lines list.
+	 *  Array $this->lines must be defined.
+	 *  @param     $dateSelector       Show date input fields (if service)
+	 *  @param     $seller             Object of seller third party
+	 *  @param     uyer                Object of buyer third party
      *  TODO Move this into page (into a lib.php file if mutualized. No code for output must be present into a business class).
-     *  But for the moment we don't know if it'st possible as we keep a method available on overloaded objects.
 	 */
-	function print_title_list()
+	function printObjectLines($dateSelector=0,$seller,$buyer)
 	{
 		global $conf,$langs;
-
+		
 		print '<tr class="liste_titre nodrag nodrop">';
 		print '<td>'.$langs->trans('Description').'</td>';
 		if ($conf->global->PRODUIT_USE_MARKUP) print '<td align="right" width="80">'.$langs->trans('Markup').'</td>';
@@ -1423,18 +1426,7 @@ class CommonObject
 		print '<td width="10">&nbsp;</td>';
 		print '<td nowrap="nowrap">&nbsp;</td>'; // No width to allow autodim
 		print "</tr>\n";
-	}
-
-	/**
-	 * 	Return HTML with object lines list.
-	 *  Array $this->lines must be defined.
-	 *  @param     $dateSelector       Show date input fields (if service)
-	 *  @param     $seller             Object of seller third party
-	 *  @param     uyer                Object of buyer third party
-     *  TODO Move this into page (into a lib.php file if mutualized. No code for output must be present into a business class).
-	 */
-	function printLinesList($dateSelector=0,$seller,$buyer)
-	{
+		
 		$num = count($this->lines);
 		$var = true;
 		$i	 = 0;
@@ -1527,12 +1519,12 @@ class CommonObject
 	}
 
 	/**
-	 * 	Return HTML table with origin title list
+	 * 	Return HTML with list of origin lines
 	 */
-	function printOriginTitleList()
+	function printOriginLinesList($object)
 	{
 		global $langs;
-
+		
 		print '<tr class="liste_titre">';
 		print '<td>'.$langs->trans('Ref').'</td>';
 		print '<td>'.$langs->trans('Description').'</td>';
@@ -1540,13 +1532,7 @@ class CommonObject
 		print '<td align="right">'.$langs->trans('PriceUHT').'</td>';
 		print '<td align="right">'.$langs->trans('Qty').'</td>';
 		print '<td align="right">'.$langs->trans('ReductionShort').'</td></tr>';
-	}
-
-	/**
-	 * 	Return HTML with list of origin lines
-	 */
-	function printOriginLinesList($object)
-	{
+		
 		$num = count($this->lines);
 		$var = true;
 		$i	 = 0;