diff --git a/htdocs/accountancy/admin/account.php b/htdocs/accountancy/admin/account.php
index b831a242bbf..baa9273e135 100644
--- a/htdocs/accountancy/admin/account.php
+++ b/htdocs/accountancy/admin/account.php
@@ -28,6 +28,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountingaccount.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","admin","accountancy","salaries"));
 
 $mesg = '';
diff --git a/htdocs/accountancy/admin/accountmodel.php b/htdocs/accountancy/admin/accountmodel.php
index f8a31b239bb..f024f54c41c 100644
--- a/htdocs/accountancy/admin/accountmodel.php
+++ b/htdocs/accountancy/admin/accountmodel.php
@@ -41,6 +41,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/doleditor.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/accounting.lib.php';
 if (! empty($conf->accounting->enabled)) require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("errors","admin","companies","resource","holiday","compta","accountancy","hrm"));
 
 $action=GETPOST('action','alpha')?GETPOST('action','alpha'):'view';
diff --git a/htdocs/accountancy/admin/card.php b/htdocs/accountancy/admin/card.php
index 669283077d9..9643227da64 100644
--- a/htdocs/accountancy/admin/card.php
+++ b/htdocs/accountancy/admin/card.php
@@ -31,6 +31,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
 $error = 0;
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","accountancy"));
 
 $mesg = '';
@@ -398,4 +399,4 @@ else if ($id > 0 || $ref) {
 
 llxFooter();
 
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/admin/categories.php b/htdocs/accountancy/admin/categories.php
index 34a857d65d4..aec34469559 100644
--- a/htdocs/accountancy/admin/categories.php
+++ b/htdocs/accountancy/admin/categories.php
@@ -29,6 +29,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
 $error = 0;
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","accountancy"));
 
 $mesg = '';
diff --git a/htdocs/accountancy/admin/categories_list.php b/htdocs/accountancy/admin/categories_list.php
index 681030a179f..15a50e7b8e8 100644
--- a/htdocs/accountancy/admin/categories_list.php
+++ b/htdocs/accountancy/admin/categories_list.php
@@ -31,6 +31,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/doleditor.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("errors","admin","companies","resource","holiday","accountancy","hrm"));
 
 $action=GETPOST('action','alpha')?GETPOST('action','alpha'):'view';
diff --git a/htdocs/accountancy/admin/defaultaccounts.php b/htdocs/accountancy/admin/defaultaccounts.php
index 9d254338526..c33d4326836 100644
--- a/htdocs/accountancy/admin/defaultaccounts.php
+++ b/htdocs/accountancy/admin/defaultaccounts.php
@@ -34,6 +34,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","admin","accountancy","salaries","loan"));
 
 // Security check
diff --git a/htdocs/accountancy/admin/export.php b/htdocs/accountancy/admin/export.php
index 6845491d003..79588db5ac1 100644
--- a/htdocs/accountancy/admin/export.php
+++ b/htdocs/accountancy/admin/export.php
@@ -32,6 +32,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountancyexport.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","admin","accountancy"));
 
 // Security access
diff --git a/htdocs/accountancy/admin/fiscalyear.php b/htdocs/accountancy/admin/fiscalyear.php
index 3910e1148b4..25223e70c68 100644
--- a/htdocs/accountancy/admin/fiscalyear.php
+++ b/htdocs/accountancy/admin/fiscalyear.php
@@ -39,6 +39,7 @@ $pagenext = $page + 1;
 if (! $sortfield) $sortfield="f.rowid"; // Set here default search field
 if (! $sortorder) $sortorder="ASC";
 
+// Load translation files required by the page
 $langs->loadLangs(array("admin","compta"));
 
 // Security check
@@ -157,4 +158,4 @@ if ($result)
 
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/admin/fiscalyear_card.php b/htdocs/accountancy/admin/fiscalyear_card.php
index db323881bdc..32df9afc932 100644
--- a/htdocs/accountancy/admin/fiscalyear_card.php
+++ b/htdocs/accountancy/admin/fiscalyear_card.php
@@ -26,6 +26,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/fiscalyear.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/fiscalyear.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("admin","compta"));
 
 // Security check
diff --git a/htdocs/accountancy/admin/fiscalyear_info.php b/htdocs/accountancy/admin/fiscalyear_info.php
index f8f0bd5668e..f16e3b9ca0e 100644
--- a/htdocs/accountancy/admin/fiscalyear_info.php
+++ b/htdocs/accountancy/admin/fiscalyear_info.php
@@ -26,6 +26,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/fiscalyear.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/functions2.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/fiscalyear.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("admin","compta"));
 
 // Security check
diff --git a/htdocs/accountancy/admin/importaccounts.php b/htdocs/accountancy/admin/importaccounts.php
index 6e235bc183e..3af46eec1a4 100644
--- a/htdocs/accountancy/admin/importaccounts.php
+++ b/htdocs/accountancy/admin/importaccounts.php
@@ -28,7 +28,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountingaccount.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","accountancy"));
 
 // Security check
diff --git a/htdocs/accountancy/admin/index.php b/htdocs/accountancy/admin/index.php
index 64857fbfbb4..a9626ec9cfe 100644
--- a/htdocs/accountancy/admin/index.php
+++ b/htdocs/accountancy/admin/index.php
@@ -32,6 +32,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","admin","accountancy"));
 
 // Security access
diff --git a/htdocs/accountancy/admin/journals_list.php b/htdocs/accountancy/admin/journals_list.php
index f738f303b33..4a5e77a434b 100644
--- a/htdocs/accountancy/admin/journals_list.php
+++ b/htdocs/accountancy/admin/journals_list.php
@@ -30,6 +30,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/doleditor.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/accountancy/class/accountingjournal.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("admin","compta","accountancy"));
 
 $action=GETPOST('action','alpha')?GETPOST('action','alpha'):'view';
diff --git a/htdocs/accountancy/admin/productaccount.php b/htdocs/accountancy/admin/productaccount.php
index eb4d331f228..070e2f353c3 100644
--- a/htdocs/accountancy/admin/productaccount.php
+++ b/htdocs/accountancy/admin/productaccount.php
@@ -34,7 +34,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountingaccount.class.php';
 require_once DOL_DOCUMENT_ROOT . '/product/class/product.class.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("companies","compta","accountancy","products"));
 
 // Security check
@@ -496,4 +496,4 @@ if ($result)
 }
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/bookkeeping/balance.php b/htdocs/accountancy/bookkeeping/balance.php
index d8a59a5ba43..f9cf6eec5e5 100644
--- a/htdocs/accountancy/bookkeeping/balance.php
+++ b/htdocs/accountancy/bookkeeping/balance.php
@@ -34,7 +34,7 @@ require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountancyexport.class.php
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 
-// Langs
+// Load translation files required by the page
 $langs->loadLangs(array("accountancy"));
 
 $page = GETPOST("page");
diff --git a/htdocs/accountancy/bookkeeping/balancebymonth.php b/htdocs/accountancy/bookkeeping/balancebymonth.php
index a433e19a09d..0010af17b34 100644
--- a/htdocs/accountancy/bookkeeping/balancebymonth.php
+++ b/htdocs/accountancy/bookkeeping/balancebymonth.php
@@ -29,7 +29,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("bills","compta","accountancy","other"));
 
 // Filter
@@ -126,4 +126,4 @@ if ($resql) {
 print "</table>\n";
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/bookkeeping/card.php b/htdocs/accountancy/bookkeeping/card.php
index f0cc48a4878..10b3b5434fd 100644
--- a/htdocs/accountancy/bookkeeping/card.php
+++ b/htdocs/accountancy/bookkeeping/card.php
@@ -32,6 +32,7 @@ require_once DOL_DOCUMENT_ROOT . '/compta/facture/class/facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/fourn/class/fournisseur.facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountingjournal.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("accountancy", "bills", "compta"));
 
 $action = GETPOST('action','aZ09');
diff --git a/htdocs/accountancy/bookkeeping/list.php b/htdocs/accountancy/bookkeeping/list.php
index 26a4cacf2c9..0e3d0df198b 100644
--- a/htdocs/accountancy/bookkeeping/list.php
+++ b/htdocs/accountancy/bookkeeping/list.php
@@ -32,6 +32,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("accountancy"));
 
 $action = GETPOST('action', 'alpha');
diff --git a/htdocs/accountancy/bookkeeping/listbyaccount.php b/htdocs/accountancy/bookkeeping/listbyaccount.php
index 499865233db..02071b3963c 100644
--- a/htdocs/accountancy/bookkeeping/listbyaccount.php
+++ b/htdocs/accountancy/bookkeeping/listbyaccount.php
@@ -33,6 +33,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("accountancy"));
 
 $page = GETPOST("page");
diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettrage.php b/htdocs/accountancy/bookkeeping/thirdparty_lettrage.php
index 67d89bcda90..9bf287bf3c9 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettrage.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettrage.php
@@ -33,6 +33,7 @@ require_once DOL_DOCUMENT_ROOT . '/accountancy/class/lettering.class.php';
 require_once DOL_DOCUMENT_ROOT . '/societe/class/societe.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/company.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta"));
 
 $action = GETPOST('action', 'aZ09');
diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettrage_supplier.php b/htdocs/accountancy/bookkeeping/thirdparty_lettrage_supplier.php
index 96317a3a740..cf278c26903 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettrage_supplier.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettrage_supplier.php
@@ -35,6 +35,7 @@ require_once DOL_DOCUMENT_ROOT . '/accountancy/class/lettering.class.php';
 require_once DOL_DOCUMENT_ROOT . '/societe/class/societe.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/company.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta"));
 
 $action = GETPOST('action', 'aZ09');
diff --git a/htdocs/accountancy/customer/card.php b/htdocs/accountancy/customer/card.php
index d0e5adc97fd..7e1387db951 100644
--- a/htdocs/accountancy/customer/card.php
+++ b/htdocs/accountancy/customer/card.php
@@ -27,6 +27,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/compta/facture/class/facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","accountancy"));
 
 $action = GETPOST('action', 'alpha');
@@ -159,4 +160,4 @@ if (! empty($id)) {
 }
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/customer/index.php b/htdocs/accountancy/customer/index.php
index 8b88d8f396b..277e2b59cb6 100644
--- a/htdocs/accountancy/customer/index.php
+++ b/htdocs/accountancy/customer/index.php
@@ -31,7 +31,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/compta/facture/class/facture.class.php';
 
-// Langs
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","main","accountancy"));
 
 // Security check
diff --git a/htdocs/accountancy/customer/lines.php b/htdocs/accountancy/customer/lines.php
index 7bc929a7e6b..4eccef67246 100644
--- a/htdocs/accountancy/customer/lines.php
+++ b/htdocs/accountancy/customer/lines.php
@@ -34,6 +34,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","compta","accountancy","productbatch"));
 
 $account_parent = GETPOST('account_parent');
diff --git a/htdocs/accountancy/customer/list.php b/htdocs/accountancy/customer/list.php
index f7485e701b7..06ac333b049 100644
--- a/htdocs/accountancy/customer/list.php
+++ b/htdocs/accountancy/customer/list.php
@@ -35,7 +35,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("bills","compta","accountancy","other","productbatch"));
 
 $action=GETPOST('action','alpha');
diff --git a/htdocs/accountancy/expensereport/card.php b/htdocs/accountancy/expensereport/card.php
index 59237fd13b2..d9b2137157d 100644
--- a/htdocs/accountancy/expensereport/card.php
+++ b/htdocs/accountancy/expensereport/card.php
@@ -31,6 +31,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/expensereport/class/expensereport.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","accountancy","trips"));
 
 $action = GETPOST('action', 'alpha');
@@ -167,4 +168,4 @@ if (! empty($id)) {
 }
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/expensereport/index.php b/htdocs/accountancy/expensereport/index.php
index 989024fa853..388cb88f780 100644
--- a/htdocs/accountancy/expensereport/index.php
+++ b/htdocs/accountancy/expensereport/index.php
@@ -29,7 +29,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/expensereport/class/expensereport.class.php';
 
-// Langs
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","main","accountancy"));
 
 // Security check
diff --git a/htdocs/accountancy/expensereport/lines.php b/htdocs/accountancy/expensereport/lines.php
index 93073a62bd4..5aa83da4afa 100644
--- a/htdocs/accountancy/expensereport/lines.php
+++ b/htdocs/accountancy/expensereport/lines.php
@@ -33,6 +33,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","accountancy","trips","productbatch"));
 
 $account_parent = GETPOST('account_parent','int');
diff --git a/htdocs/accountancy/expensereport/list.php b/htdocs/accountancy/expensereport/list.php
index 2abd3fdc776..50ea44291b5 100644
--- a/htdocs/accountancy/expensereport/list.php
+++ b/htdocs/accountancy/expensereport/list.php
@@ -34,7 +34,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("bills","compta","accountancy","other","trips","productbatch"));
 
 $action=GETPOST('action','alpha');
diff --git a/htdocs/accountancy/index.php b/htdocs/accountancy/index.php
index ba79f9ee78e..c1f0fb0572b 100644
--- a/htdocs/accountancy/index.php
+++ b/htdocs/accountancy/index.php
@@ -26,6 +26,7 @@ require '../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","accountancy","loans","banks","admin","dict"));
 
 // Security check
diff --git a/htdocs/accountancy/journal/bankjournal.php b/htdocs/accountancy/journal/bankjournal.php
index 3bb98e42727..acd06ac3c30 100644
--- a/htdocs/accountancy/journal/bankjournal.php
+++ b/htdocs/accountancy/journal/bankjournal.php
@@ -56,6 +56,7 @@ require_once DOL_DOCUMENT_ROOT . '/compta/bank/class/account.class.php';
 require_once DOL_DOCUMENT_ROOT . '/loan/class/loan.class.php';
 require_once DOL_DOCUMENT_ROOT . '/loan/class/paymentloan.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("companies","other","compta","banks","bills","donations","loan","accountancy","trips","salaries","hrm"));
 
 // Multi journal
diff --git a/htdocs/accountancy/journal/expensereportsjournal.php b/htdocs/accountancy/journal/expensereportsjournal.php
index 27b627b4b98..5b62d11bc86 100644
--- a/htdocs/accountancy/journal/expensereportsjournal.php
+++ b/htdocs/accountancy/journal/expensereportsjournal.php
@@ -36,6 +36,7 @@ require_once DOL_DOCUMENT_ROOT . '/expensereport/class/expensereport.class.php';
 require_once DOL_DOCUMENT_ROOT . '/user/class/user.class.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/bookkeeping.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("commercial", "compta","bills","other","accountancy","trips","errors"));
 
 $id_journal = GETPOST('id_journal', 'int');
diff --git a/htdocs/accountancy/journal/purchasesjournal.php b/htdocs/accountancy/journal/purchasesjournal.php
index 5eb20c8eecb..5de7e0e19d2 100644
--- a/htdocs/accountancy/journal/purchasesjournal.php
+++ b/htdocs/accountancy/journal/purchasesjournal.php
@@ -36,6 +36,7 @@ require_once DOL_DOCUMENT_ROOT . '/fourn/class/fournisseur.facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/fourn/class/fournisseur.class.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/bookkeeping.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("commercial", "compta","bills","other","accountancy","errors"));
 
 $id_journal = GETPOST('id_journal', 'int');
diff --git a/htdocs/accountancy/journal/sellsjournal.php b/htdocs/accountancy/journal/sellsjournal.php
index 8882396d5fb..4733f1c7b16 100644
--- a/htdocs/accountancy/journal/sellsjournal.php
+++ b/htdocs/accountancy/journal/sellsjournal.php
@@ -39,6 +39,7 @@ require_once DOL_DOCUMENT_ROOT . '/compta/facture/class/facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/societe/class/client.class.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/bookkeeping.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("commercial", "compta","bills","other","accountancy","errors"));
 
 $id_journal = GETPOST('id_journal', 'int');
diff --git a/htdocs/accountancy/supplier/card.php b/htdocs/accountancy/supplier/card.php
index 847181b79cb..f126d00f2e9 100644
--- a/htdocs/accountancy/supplier/card.php
+++ b/htdocs/accountancy/supplier/card.php
@@ -31,6 +31,7 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT . '/fourn/class/fournisseur.facture.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("bills","accountancy"));
 
 $action = GETPOST('action', 'alpha');
@@ -162,4 +163,4 @@ if (! empty($id)) {
 }
 
 llxFooter();
-$db->close();
\ No newline at end of file
+$db->close();
diff --git a/htdocs/accountancy/supplier/index.php b/htdocs/accountancy/supplier/index.php
index 1bba9a941e0..f14cb1092f2 100644
--- a/htdocs/accountancy/supplier/index.php
+++ b/htdocs/accountancy/supplier/index.php
@@ -29,7 +29,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/fourn/class/fournisseur.facture.class.php';
 
-// Langs
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","main","accountancy"));
 
 // Security check
diff --git a/htdocs/accountancy/supplier/lines.php b/htdocs/accountancy/supplier/lines.php
index a3e71cea0af..e449b270ef9 100644
--- a/htdocs/accountancy/supplier/lines.php
+++ b/htdocs/accountancy/supplier/lines.php
@@ -35,6 +35,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
+// Load translation files required by the page
 $langs->loadLangs(array("compta","bills","other","accountancy","productbatch"));
 
 $account_parent = GETPOST('account_parent');
diff --git a/htdocs/accountancy/supplier/list.php b/htdocs/accountancy/supplier/list.php
index 4a52cb9a0e4..b5ff870a83c 100644
--- a/htdocs/accountancy/supplier/list.php
+++ b/htdocs/accountancy/supplier/list.php
@@ -35,7 +35,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("bills","compta","accountancy","other","productbatch"));
 
 $action=GETPOST('action','alpha');
diff --git a/htdocs/comm/action/rapport/index.php b/htdocs/comm/action/rapport/index.php
index 268018d02e4..7e4108b470b 100644
--- a/htdocs/comm/action/rapport/index.php
+++ b/htdocs/comm/action/rapport/index.php
@@ -31,7 +31,7 @@ require_once DOL_DOCUMENT_ROOT.'/contact/class/contact.class.php';
 require_once DOL_DOCUMENT_ROOT.'/comm/action/class/actioncomm.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/modules/action/rapport.pdf.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("agenda", "commercial"));
 
 $action=GETPOST('action','alpha');
diff --git a/htdocs/core/ajax/ajaxdirpreview.php b/htdocs/core/ajax/ajaxdirpreview.php
index 4d72b576429..f69cc85e026 100644
--- a/htdocs/core/ajax/ajaxdirpreview.php
+++ b/htdocs/core/ajax/ajaxdirpreview.php
@@ -93,7 +93,7 @@ if (empty($url))
 	else $url=DOL_URL_ROOT.'/ecm/index.php';
 }
 
-// Load traductions files
+// Load translation files required by the page
 $langs->loadLangs(array("ecm","companies","other"));
 
 // Security check
diff --git a/htdocs/core/ajax/ajaxdirtree.php b/htdocs/core/ajax/ajaxdirtree.php
index 796ced332ab..59fe3385c61 100644
--- a/htdocs/core/ajax/ajaxdirtree.php
+++ b/htdocs/core/ajax/ajaxdirtree.php
@@ -53,6 +53,7 @@ else    // For no ajax call
 	if (empty($url)) $url=DOL_URL_ROOT.'/ecm/index.php';
 }
 
+// Load translation files required by the page
 $langs->load("ecm");
 
 // Define fullpathselecteddir.
diff --git a/htdocs/product/agenda.php b/htdocs/product/agenda.php
index 166265ba247..9eee66664d9 100644
--- a/htdocs/product/agenda.php
+++ b/htdocs/product/agenda.php
@@ -33,6 +33,7 @@ require_once DOL_DOCUMENT_ROOT.'/compta/facture/class/facture.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 
+// Load translation files required by the page
 $langs->load("companies");
 
 if (GETPOST('actioncode','array'))
diff --git a/htdocs/product/card.php b/htdocs/product/card.php
index 84ba11bf624..34df9ae725c 100644
--- a/htdocs/product/card.php
+++ b/htdocs/product/card.php
@@ -55,8 +55,8 @@ if (! empty($conf->accounting->enabled)) require_once DOL_DOCUMENT_ROOT.'/core/l
 if (! empty($conf->accounting->enabled)) require_once DOL_DOCUMENT_ROOT.'/core/class/html.formaccounting.class.php';
 if (! empty($conf->accounting->enabled)) require_once DOL_DOCUMENT_ROOT.'/accountancy/class/accountingaccount.class.php';
 
-$langs->load("products");
-$langs->load("other");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'other'));
 if (! empty($conf->stock->enabled)) $langs->load("stocks");
 if (! empty($conf->facture->enabled)) $langs->load("bills");
 if (! empty($conf->productbatch->enabled)) $langs->load("productbatch");
diff --git a/htdocs/product/document.php b/htdocs/product/document.php
index 442eb3f53f3..34337218a62 100644
--- a/htdocs/product/document.php
+++ b/htdocs/product/document.php
@@ -37,8 +37,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';
 if (!empty($conf->global->PRODUIT_PDF_MERGE_PROPAL))
 	require_once DOL_DOCUMENT_ROOT.'/product/class/propalmergepdfproduct.class.php';
 
-$langs->load("other");
-$langs->load("products");
+// Load translation files required by the page
+$langs->loadLangs(array('other', 'products'));
 
 $id     = GETPOST('id', 'int');
 $ref    = GETPOST('ref', 'alpha');
diff --git a/htdocs/product/fournisseurs.php b/htdocs/product/fournisseurs.php
index 21439a1ac8a..b2713d65304 100644
--- a/htdocs/product/fournisseurs.php
+++ b/htdocs/product/fournisseurs.php
@@ -37,10 +37,8 @@ require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.product.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/dynamic_price/class/price_expression.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/dynamic_price/class/price_parser.class.php';
 
-$langs->load("products");
-$langs->load("suppliers");
-$langs->load("bills");
-$langs->load("margins");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'suppliers', 'bills', 'margins'));
 
 $id = GETPOST('id', 'int');
 $ref = GETPOST('ref', 'alpha');
diff --git a/htdocs/product/index.php b/htdocs/product/index.php
index 1254af2213b..9ea0176a553 100644
--- a/htdocs/product/index.php
+++ b/htdocs/product/index.php
@@ -39,8 +39,8 @@ if ($type=='0') $result=restrictedArea($user,'produit');
 else if ($type=='1') $result=restrictedArea($user,'service');
 else $result=restrictedArea($user,'produit|service');
 
-$langs->load("products");
-$langs->load("stocks");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks'));
 
 // Initialize technical object to manage hooks. Note that conf->hooks_modules contains array of hooks
 $hookmanager->initHooks(array('productindex'));
diff --git a/htdocs/product/inventory/card.php b/htdocs/product/inventory/card.php
index adf351e4013..ee914971857 100644
--- a/htdocs/product/inventory/card.php
+++ b/htdocs/product/inventory/card.php
@@ -26,7 +26,7 @@ include_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
 include_once DOL_DOCUMENT_ROOT.'/product/inventory/class/inventory.class.php';
 include_once DOL_DOCUMENT_ROOT.'/product/inventory/lib/inventory.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("stocks","other"));
 
 // Get parameters
diff --git a/htdocs/product/inventory/list.php b/htdocs/product/inventory/list.php
index 07f0aaa89e3..3a483291a75 100644
--- a/htdocs/product/inventory/list.php
+++ b/htdocs/product/inventory/list.php
@@ -27,7 +27,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/company.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/product/inventory/class/inventory.class.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("stocks","other"));
 
 $action     = GETPOST('action','alpha')?GETPOST('action','alpha'):'view';				// The action 'add', 'create', 'edit', 'update', 'view', ...
diff --git a/htdocs/product/list.php b/htdocs/product/list.php
index 11be839aa4f..2d306a69ff4 100644
--- a/htdocs/product/list.php
+++ b/htdocs/product/list.php
@@ -39,10 +39,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formother.class.php';
 if (! empty($conf->categorie->enabled))
 	require_once DOL_DOCUMENT_ROOT.'/categories/class/categorie.class.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("suppliers");
-$langs->load("companies");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'suppliers', 'companies'));
 if (! empty($conf->productbatch->enabled)) $langs->load("productbatch");
 
 $action=GETPOST('action','alpha');
diff --git a/htdocs/product/note.php b/htdocs/product/note.php
index 5e73548579c..c0e9d77ea83 100644
--- a/htdocs/product/note.php
+++ b/htdocs/product/note.php
@@ -30,6 +30,7 @@ require '../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 
+// Load translation files required by the page
 $langs->load("companies");
 
 $id = GETPOST('id', 'int');
diff --git a/htdocs/product/popuprop.php b/htdocs/product/popuprop.php
index 91a8f4f80a4..d6aa23fe2c0 100644
--- a/htdocs/product/popuprop.php
+++ b/htdocs/product/popuprop.php
@@ -29,6 +29,7 @@
 require '../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 
+// Load translation files required by the page
 //Required to translate NbOfProposals
 $langs->load('propal');
 
diff --git a/htdocs/product/price.php b/htdocs/product/price.php
index ad73b57d76f..b5ede482f99 100644
--- a/htdocs/product/price.php
+++ b/htdocs/product/price.php
@@ -45,9 +45,8 @@ if (! empty($conf->global->PRODUIT_CUSTOMER_PRICES)) {
 	$prodcustprice = new Productcustomerprice($db);
 }
 
-$langs->load("products");
-$langs->load("bills");
-$langs->load("companies");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'bills', 'companies'));
 
 $mesg=''; $error=0; $errors=array();
 
diff --git a/htdocs/product/reassort.php b/htdocs/product/reassort.php
index 88b9f2080aa..4bade1db2cf 100644
--- a/htdocs/product/reassort.php
+++ b/htdocs/product/reassort.php
@@ -31,8 +31,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT.'/categories/class/categorie.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/html.formproduct.class.php';
 
-$langs->load("products");
-$langs->load("stocks");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks'));
 
 // Security check
 if ($user->societe_id) $socid=$user->societe_id;
diff --git a/htdocs/product/reassortlot.php b/htdocs/product/reassortlot.php
index 423d0f4015d..7b82408cfc0 100644
--- a/htdocs/product/reassortlot.php
+++ b/htdocs/product/reassortlot.php
@@ -33,9 +33,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT.'/categories/class/categorie.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("productbatch");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'productbatch'));
 
 // Security check
 if ($user->societe_id) $socid=$user->societe_id;
diff --git a/htdocs/product/stock/card.php b/htdocs/product/stock/card.php
index 3765bafff16..41e70a6fbf9 100644
--- a/htdocs/product/stock/card.php
+++ b/htdocs/product/stock/card.php
@@ -34,10 +34,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/html.formproduct.class.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("companies");
-$langs->load("categories");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'companies', 'categories'));
 
 $action=GETPOST('action','aZ09');
 $cancel=GETPOST('cancel','alpha');
diff --git a/htdocs/product/stock/fiche-valo.php b/htdocs/product/stock/fiche-valo.php
index e05013cbe77..400c6183ca4 100644
--- a/htdocs/product/stock/fiche-valo.php
+++ b/htdocs/product/stock/fiche-valo.php
@@ -26,9 +26,8 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/stock.lib.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("companies");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'companies'));
 $mesg = '';
 
 // Security check
diff --git a/htdocs/product/stock/index.php b/htdocs/product/stock/index.php
index a1414ab06ac..fd2c1d48168 100644
--- a/htdocs/product/stock/index.php
+++ b/htdocs/product/stock/index.php
@@ -27,8 +27,8 @@ require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 
-$langs->load("stocks");
-$langs->load("productbatch");
+// Load translation files required by the page
+$langs->loadLangs(array('stocks', 'productbatch'));
 
 // Security check
 $result=restrictedArea($user,'stock');
diff --git a/htdocs/product/stock/info.php b/htdocs/product/stock/info.php
index 4d49a0c8514..4653a56495d 100644
--- a/htdocs/product/stock/info.php
+++ b/htdocs/product/stock/info.php
@@ -26,6 +26,7 @@ require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/stock.lib.php';
 
+// Load translation files required by the page
 $langs->load("stocks");
 
 $id = GETPOST('id','int');
diff --git a/htdocs/product/stock/list.php b/htdocs/product/stock/list.php
index 3d01e7a9f06..c1b055bf5a9 100644
--- a/htdocs/product/stock/list.php
+++ b/htdocs/product/stock/list.php
@@ -27,6 +27,7 @@
 require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 
+// Load translation files required by the page
 $langs->load("stocks");
 
 // Security check
diff --git a/htdocs/product/stock/massstockmove.php b/htdocs/product/stock/massstockmove.php
index 270217b33f9..2197e9c76c1 100644
--- a/htdocs/product/stock/massstockmove.php
+++ b/htdocs/product/stock/massstockmove.php
@@ -31,10 +31,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.commande.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/html.formproduct.class.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("orders");
-$langs->load("productbatch");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'orders', 'productbatch'));
 
 // Security check
 if ($user->societe_id) {
diff --git a/htdocs/product/stock/mouvement.php b/htdocs/product/stock/mouvement.php
index f21c509f188..02498dbe8ff 100644
--- a/htdocs/product/stock/mouvement.php
+++ b/htdocs/product/stock/mouvement.php
@@ -42,8 +42,8 @@ if (! empty($conf->projet->enabled))
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
 }
 
-$langs->load("products");
-$langs->load("stocks");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks'));
 if (! empty($conf->productbatch->enabled)) $langs->load("productbatch");
 
 // Security check
diff --git a/htdocs/product/stock/product.php b/htdocs/product/stock/product.php
index bc4d6daaaa4..d867848345d 100644
--- a/htdocs/product/stock/product.php
+++ b/htdocs/product/stock/product.php
@@ -44,11 +44,8 @@ if (! empty($conf->projet->enabled))
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
 }
 
-$langs->load("products");
-$langs->load("orders");
-$langs->load("bills");
-$langs->load("stocks");
-$langs->load("sendings");
+// Load translation files required by the page
+$langs->loadlangs(array('products', 'orders', 'bills', 'stocks', 'sendings'));
 if (! empty($conf->productbatch->enabled)) $langs->load("productbatch");
 
 $backtopage=GETPOST('backtopage','alpha');
diff --git a/htdocs/product/stock/productlot_card.php b/htdocs/product/stock/productlot_card.php
index 90ca3a73cc9..4c614155042 100644
--- a/htdocs/product/stock/productlot_card.php
+++ b/htdocs/product/stock/productlot_card.php
@@ -24,25 +24,16 @@
  *					Initialy built by build_class_from_table on 2016-05-17 12:22
  */
 
-// Change this following line to use the correct relative path (../, ../../, etc)
-$res=0;
-if (! $res && file_exists("../main.inc.php")) $res=@include '../main.inc.php';					// to work if your module directory is into dolibarr root htdocs directory
-if (! $res && file_exists("../../main.inc.php")) $res=@include '../../main.inc.php';			// to work if your module directory is into a subdir of root htdocs directory
-if (! $res && file_exists("../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../dolibarr/htdocs/main.inc.php';     // Used on dev env only
-if (! $res && file_exists("../../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../../dolibarr/htdocs/main.inc.php';   // Used on dev env only
-if (! $res) die("Include of main fails");
-// Change this following line to use the correct relative path from htdocs
+require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';
-include_once(DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php');
-include_once(DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php');
-include_once(DOL_DOCUMENT_ROOT.'/product/class/product.class.php');
+require_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
+require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
+require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php';
-dol_include_once('/product/stock/class/productlot.class.php');
+require_once DOL_DOCUMENT_ROOT.'/product/stock/class/productlot.class.php';
 
-// Load traductions files requiredby by page
-$langs->load("stock");
-$langs->load("other");
-$langs->load("productbatch");
+// Load translation files required by the page
+$langs->loadLangs(array('stock', 'other', 'productbatch'));
 
 // Get parameters
 $id			= GETPOST('id','int');
diff --git a/htdocs/product/stock/productlot_document.php b/htdocs/product/stock/productlot_document.php
index be93256858f..f79a0d74d98 100644
--- a/htdocs/product/stock/productlot_document.php
+++ b/htdocs/product/stock/productlot_document.php
@@ -29,22 +29,16 @@
  *       \brief      Page des documents joints sur les lots produits
  */
 
-// Change this following line to use the correct relative path (../, ../../, etc)
-$res=0;
-if (! $res && file_exists("../main.inc.php")) $res=@include '../main.inc.php';					// to work if your module directory is into dolibarr root htdocs directory
-if (! $res && file_exists("../../main.inc.php")) $res=@include '../../main.inc.php';			// to work if your module directory is into a subdir of root htdocs directory
-if (! $res && file_exists("../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../dolibarr/htdocs/main.inc.php';     // Used on dev env only
-if (! $res && file_exists("../../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../../dolibarr/htdocs/main.inc.php';   // Used on dev env only
-if (! $res) die("Include of main fails");
+require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/images.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';
-dol_include_once('/product/stock/class/productlot.class.php');
+require_once DOL_DOCUMENT_ROOT.'/product/stock/class/productlot.class.php';
 
-$langs->load("other");
-$langs->load("products");
+// Load translation files required by the page
+$langs->loadLangs(array('other', 'products'));
 
 $id     = GETPOST('id', 'int');
 $ref    = GETPOST('ref', 'alpha');
diff --git a/htdocs/product/stock/productlot_list.php b/htdocs/product/stock/productlot_list.php
index c9ac6269dbd..5ea3df84839 100644
--- a/htdocs/product/stock/productlot_list.php
+++ b/htdocs/product/stock/productlot_list.php
@@ -23,25 +23,15 @@
  *					Initialy built by build_class_from_table on 2016-05-17 12:22
  */
 
-// Change this following line to use the correct relative path (../, ../../, etc)
-$res=0;
-if (! $res && file_exists("../main.inc.php")) $res=@include '../main.inc.php';					// to work if your module directory is into dolibarr root htdocs directory
-if (! $res && file_exists("../../main.inc.php")) $res=@include '../../main.inc.php';			// to work if your module directory is into a subdir of root htdocs directory
-if (! $res && file_exists("../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../dolibarr/htdocs/main.inc.php';     // Used on dev env only
-if (! $res && file_exists("../../../../dolibarr/htdocs/main.inc.php")) $res=@include '../../../../dolibarr/htdocs/main.inc.php';   // Used on dev env only
-if (! $res) die("Include of main fails");
-// Change this following line to use the correct relative path from htdocs
-require_once(DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php');
+require '../../main.inc.php';
+require_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/company.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
-dol_include_once('/product/stock/class/productlot.class.php');
+require_once DOL_DOCUMENT_ROOT.'/product/stock/class/productlot.class.php';
 
-// Load traductions files requiredby by page
-$langs->load("stocks");
-$langs->load("productbatch");
-$langs->load("other");
-$langs->load("users");
+// Load translation files required by the page
+$langs->loadLangs(array('stocks', 'productbatch', 'other', 'users'));
 
 // Get parameters
 $id			= GETPOST('id','int');
diff --git a/htdocs/product/stock/replenish.php b/htdocs/product/stock/replenish.php
index 360a12a7c69..336c5ce2e32 100644
--- a/htdocs/product/stock/replenish.php
+++ b/htdocs/product/stock/replenish.php
@@ -33,9 +33,8 @@ require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.commande.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/html.formproduct.class.php';
 require_once './lib/replenishment.lib.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("orders");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'orders'));
 
 // Security check
 if ($user->societe_id) {
diff --git a/htdocs/product/stock/replenishorders.php b/htdocs/product/stock/replenishorders.php
index c10e1117024..942ca82bc04 100644
--- a/htdocs/product/stock/replenishorders.php
+++ b/htdocs/product/stock/replenishorders.php
@@ -32,9 +32,8 @@ require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.commande.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/lib/replenishment.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
 
-$langs->load("products");
-$langs->load("stocks");
-$langs->load("orders");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'stocks', 'orders'));
 
 // Security check
 if ($user->societe_id) $socid=$user->societe_id;
diff --git a/htdocs/product/stock/valo.php b/htdocs/product/stock/valo.php
index bfc7cd80a78..be8ee2d500e 100644
--- a/htdocs/product/stock/valo.php
+++ b/htdocs/product/stock/valo.php
@@ -26,6 +26,7 @@
 require '../../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 
+// Load translation files required by the page
 $langs->load("stocks");
 
 // Security check
diff --git a/htdocs/product/traduction.php b/htdocs/product/traduction.php
index d0740f7cd71..e8900d51bb4 100644
--- a/htdocs/product/traduction.php
+++ b/htdocs/product/traduction.php
@@ -31,8 +31,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formadmin.class.php';
 
-$langs->load("products");
-$langs->load("languages");
+// Load translation files required by the page
+$langs->loadLangs(array('products', 'languages'));
 
 $id = GETPOST('id', 'int');
 $ref = GETPOST('ref', 'alpha');
diff --git a/htdocs/public/ticketsup/create_ticket.php b/htdocs/public/ticketsup/create_ticket.php
index a6fc6778f96..4e6d5734f91 100644
--- a/htdocs/public/ticketsup/create_ticket.php
+++ b/htdocs/public/ticketsup/create_ticket.php
@@ -36,11 +36,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/ticketsup.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php';
 require_once DOL_DOCUMENT_ROOT.'/user/class/user.class.php';
 
-// Load traductions files requiredby by page
-$langs->load("companies");
-$langs->load("other");
-$langs->load("mails");
-$langs->load("ticketsup");
+// Load translation files required by the page
+$langs->loadLangs(array('companies', 'other', 'mails', 'ticketsup'));
 
 // Get parameters
 $id = GETPOST('id', 'int');
diff --git a/htdocs/public/ticketsup/index.php b/htdocs/public/ticketsup/index.php
index a7649576275..968fad356f4 100644
--- a/htdocs/public/ticketsup/index.php
+++ b/htdocs/public/ticketsup/index.php
@@ -31,11 +31,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/html.formticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/ticketsup.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/security.lib.php';
 
-// Load traductions files requiredby by page
-$langs->load("companies");
-$langs->load("other");
-$langs->load("ticketsup");
-$langs->load("errors");
+// Load translation files required by the page
+$langs->loadLangs(array('companies', 'other', 'ticketsup', 'errors'));
 
 // Get parameters
 $track_id = GETPOST('track_id', 'alpha');
diff --git a/htdocs/public/ticketsup/list.php b/htdocs/public/ticketsup/list.php
index 9a930bc78b0..aa304580017 100644
--- a/htdocs/public/ticketsup/list.php
+++ b/htdocs/public/ticketsup/list.php
@@ -39,7 +39,7 @@ require_once DOL_DOCUMENT_ROOT.'/ticketsup/class/actions_ticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/ticketsup.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("companies","other","ticketsup"));
 
 // Get parameters
diff --git a/htdocs/public/ticketsup/view.php b/htdocs/public/ticketsup/view.php
index 5f039d87ea5..f81ba85f56d 100644
--- a/htdocs/public/ticketsup/view.php
+++ b/htdocs/public/ticketsup/view.php
@@ -39,7 +39,7 @@ require_once DOL_DOCUMENT_ROOT.'/ticketsup/class/actions_ticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/ticketsup.lib.php';
 
-// Load traductions files requiredby by page
+// Load translation files required by the page
 $langs->loadLangs(array("companies","other","ticketsup"));
 
 // Get parameters
diff --git a/htdocs/ticketsup/contact.php b/htdocs/ticketsup/contact.php
index f6938b1a7fc..36091f9ef4e 100644
--- a/htdocs/ticketsup/contact.php
+++ b/htdocs/ticketsup/contact.php
@@ -34,7 +34,7 @@ require_once DOL_DOCUMENT_ROOT . "/core/lib/company.lib.php";
 require_once DOL_DOCUMENT_ROOT . '/contact/class/contact.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formcompany.class.php';
 
-// Load translation files required by page
+// Load translation files required by the page
 $langs->loadLangs(array('companies', 'ticketsup'));
 
 // Get parameters
diff --git a/htdocs/ticketsup/document.php b/htdocs/ticketsup/document.php
index c6bc116dee4..33487fa878b 100644
--- a/htdocs/ticketsup/document.php
+++ b/htdocs/ticketsup/document.php
@@ -33,7 +33,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/lib/images.lib.php';
 require_once DOL_DOCUMENT_ROOT . "/core/lib/company.lib.php";
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formfile.class.php';
 
-// Load translation files required by page
+// Load translation files required by the page
 $langs->loadLangs(array("companies","other","ticketsup","mails"));
 
 $id       = GETPOST('id', 'int');
diff --git a/htdocs/ticketsup/history.php b/htdocs/ticketsup/history.php
index da08574aa3f..ff466da6ded 100644
--- a/htdocs/ticketsup/history.php
+++ b/htdocs/ticketsup/history.php
@@ -33,7 +33,7 @@ if (!class_exists('Contact')) {
     include DOL_DOCUMENT_ROOT . '/contact/class/contact.class.php';
 }
 
-// Load translation files required by page
+// Load translation files required by the page
 $langs->loadLangs(array('companies', 'other', 'ticketsup'));
 
 // Get parameters
diff --git a/htdocs/ticketsup/index.php b/htdocs/ticketsup/index.php
index dfd2455e74a..82e5826cc43 100644
--- a/htdocs/ticketsup/index.php
+++ b/htdocs/ticketsup/index.php
@@ -25,7 +25,7 @@ require_once DOL_DOCUMENT_ROOT . '/ticketsup/class/actions_ticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT . '/ticketsup/class/ticketsupstats.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/dolgraph.class.php';
 
-// Load translation files required by page
+// Load translation files required by the page
 $langs->loadLangs(array('companies', 'other', 'ticketsup'));
 
 $WIDTH = DolGraph::getDefaultGraphSizeForStats('width');
diff --git a/htdocs/ticketsup/new.php b/htdocs/ticketsup/new.php
index 6ab7d5ee560..5cb8dce2380 100644
--- a/htdocs/ticketsup/new.php
+++ b/htdocs/ticketsup/new.php
@@ -27,7 +27,7 @@ require_once DOL_DOCUMENT_ROOT . '/core/class/html.formticketsup.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/lib/ticketsup.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/extrafields.class.php';
 
-// Load translation files required by page
+// Load translation files required by the page
 $langs->loadLangs(array('companies', 'other', 'ticketsup'));
 
 // Get parameters