diff --git a/htdocs/admin/bank.php b/htdocs/admin/bank.php
index 6580db4e8f3..e1e468b0cec 100644
--- a/htdocs/admin/bank.php
+++ b/htdocs/admin/bank.php
@@ -275,8 +275,7 @@ print '<br><br>';
 /*
  * Document templates generators
  */
-//if (! empty($conf->global->MAIN_FEATURES_LEVEL))
-//{
+
 print load_fiche_titre($langs->trans("BankAccountModelModule"), '', '');
 
 // Load array def with activated templates
@@ -466,8 +465,7 @@ print '<br><br>';
 /*
  * Document templates generators
  */
-//if (! empty($conf->global->MAIN_FEATURES_LEVEL))
-//{
+
 print load_fiche_titre($langs->trans("Other"), '', '');
 
 print "<table class=\"noborder\" width=\"100%\">\n";
diff --git a/htdocs/admin/modules.php b/htdocs/admin/modules.php
index 9c2b91ec586..2cbb14bb2dd 100644
--- a/htdocs/admin/modules.php
+++ b/htdocs/admin/modules.php
@@ -542,7 +542,7 @@ if ($mode == 'common' || $mode == 'commonkanban') {
 	$moreforfilter .= '<div class="divsearchfield paddingtop">';
 	$moreforfilter .= $form->selectarray('search_nature', $arrayofnatures, dol_escape_htmltag($search_nature), $langs->trans('Origin'), 0, 0, '', 0, 0, 0, '', 'maxwidth200', 1);
 	$moreforfilter .= '</div>';
-	if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
+	if (getDolGlobalInt('MAIN_FEATURES_LEVEL')) {
 		$array_version = array('stable'=>$langs->transnoentitiesnoconv("Stable"));
 		if ($conf->global->MAIN_FEATURES_LEVEL < 0) {
 			$array_version['deprecated'] = $langs->trans("Deprecated");
diff --git a/htdocs/admin/prelevement.php b/htdocs/admin/prelevement.php
index 207642fe8e3..88a02e90457 100644
--- a/htdocs/admin/prelevement.php
+++ b/htdocs/admin/prelevement.php
@@ -297,7 +297,7 @@ foreach ($dirmodels as $reldir)
 							$module = new $classname($db);
 
 							$modulequalified=1;
-							if ($module->version == 'development'  && $conf->global->MAIN_FEATURES_LEVEL < 2) $modulequalified=0;
+							if ($module->version == 'development' && $conf->global->MAIN_FEATURES_LEVEL < 2) $modulequalified=0;
 							if ($module->version == 'experimental' && $conf->global->MAIN_FEATURES_LEVEL < 1) $modulequalified=0;
 
 							if ($modulequalified) {
diff --git a/htdocs/admin/syslog.php b/htdocs/admin/syslog.php
index 10b3d1bd47b..2f272cd986f 100644
--- a/htdocs/admin/syslog.php
+++ b/htdocs/admin/syslog.php
@@ -187,8 +187,6 @@ if (!empty($conf->global->MAIN_MODULE_MULTICOMPANY) && $user->entity) {
 }
 
 
-//print "conf->global->MAIN_FEATURES_LEVEL = ".$conf->global->MAIN_FEATURES_LEVEL."<br><br>\n";
-
 // Output mode
 print load_fiche_titre($langs->trans("SyslogOutput"), '', '');
 
@@ -207,7 +205,7 @@ foreach ($syslogModules as $moduleName) {
 
 	$moduleactive = (int) $module->isActive();
 	//print $moduleName." = ".$moduleactive." - ".$module->getName()." ".($moduleactive == -1)."<br>\n";
-	if (($moduleactive == -1) && empty($conf->global->MAIN_FEATURES_LEVEL)) {
+	if (($moduleactive == -1) && getDolGlobalInt('MAIN_FEATURES_LEVEL') == 0) {
 		continue; // Some modules are hidden if not activable and not into debug mode (end user must not see them)
 	}
 
diff --git a/htdocs/admin/translation.php b/htdocs/admin/translation.php
index f07623ed5d0..e9a6eaeb390 100644
--- a/htdocs/admin/translation.php
+++ b/htdocs/admin/translation.php
@@ -556,7 +556,7 @@ if ($mode == 'searchkey') {
 				print '<a class="reposition paddingrightonly" href="'.$_SERVER['PHP_SELF'].'?mode=overwrite&langcode='.urlencode($langcode).'&transkey='.urlencode($key).'">'.img_edit_add($langs->trans("TranslationOverwriteKey")).'</a>';
 			}
 
-			if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
+			if (getDolGlobalInt('MAIN_FEATURES_LEVEL')) {
 				$transifexlangfile = '$'; // $ means 'All'
 				//$transifexurl = 'https://www.transifex.com/dolibarr-association/dolibarr/translate/#'.$langcode.'/'.$transifexlangfile.'?key='.$key;
 				$transifexurl = 'https://www.transifex.com/dolibarr-association/dolibarr/translate/#'.$langcode.'/'.$transifexlangfile.'?q=key%3A'.$key;
diff --git a/htdocs/comm/propal/card.php b/htdocs/comm/propal/card.php
index c046281f18e..896448d7b9a 100644
--- a/htdocs/comm/propal/card.php
+++ b/htdocs/comm/propal/card.php
@@ -2679,7 +2679,7 @@ if ($action == 'create') {
 		$somethingshown = $form->showLinkedObjectBlock($object, $linktoelem, $compatibleImportElementsList);
 
 		// Show online signature link
-		$useonlinesignature = $conf->global->MAIN_FEATURES_LEVEL; // Replace this with 1 when feature to make online signature is ok
+		$useonlinesignature = 1; // Replace this with 1 when feature to make online signature is ok
 
 		if ($object->statut != Propal::STATUS_DRAFT && $useonlinesignature) {
 			print '<br><!-- Link to sign -->';
diff --git a/htdocs/core/class/html.formadmin.class.php b/htdocs/core/class/html.formadmin.class.php
index 13619fe5aa3..4196fb32b68 100644
--- a/htdocs/core/class/html.formadmin.class.php
+++ b/htdocs/core/class/html.formadmin.class.php
@@ -304,7 +304,7 @@ class FormAdmin
 								if (preg_match('/\.lib/i', $filelib)) {
 									continue;
 								}
-								if (empty($conf->global->MAIN_FEATURES_LEVEL) && in_array($file, $expdevmenu)) {
+								if (getDolGlobalInt('MAIN_FEATURES_LEVEL') == 0 && in_array($file, $expdevmenu)) {
 									continue;
 								}
 
diff --git a/htdocs/core/class/infobox.class.php b/htdocs/core/class/infobox.class.php
index adde51c4974..0cd34e13193 100644
--- a/htdocs/core/class/infobox.class.php
+++ b/htdocs/core/class/infobox.class.php
@@ -37,7 +37,7 @@ class InfoBox
 	{
 		global $conf;
 
-		if (empty($conf->global->MAIN_FEATURES_LEVEL) || $conf->global->MAIN_FEATURES_LEVEL < 2) {
+		if (getDolGlobalInt('MAIN_FEATURES_LEVEL') < 2) {
 			return array(
 				0 => 'Home',
 				1 => 'UsersHome',
diff --git a/htdocs/core/class/translate.class.php b/htdocs/core/class/translate.class.php
index b535d2b3585..e741adc84b5 100644
--- a/htdocs/core/class/translate.class.php
+++ b/htdocs/core/class/translate.class.php
@@ -589,7 +589,7 @@ class Translate
 		}
 
 		/* Disabled. There is too many cases where translation of $newstr is not defined is normal (like when output with setEventMessage an already translated string)
-		if (! empty($conf->global->MAIN_FEATURES_LEVEL) && $conf->global->MAIN_FEATURES_LEVEL >= 2)
+		if (getDolGlobalInt('MAIN_FEATURES_LEVEL') >= 2)
 		{
 			dol_syslog(__METHOD__." MAIN_FEATURES_LEVEL=DEVELOP: missing translation for key '".$newstr."' in ".$_SERVER["PHP_SELF"], LOG_DEBUG);
 		}*/
diff --git a/htdocs/core/get_info.php b/htdocs/core/get_info.php
index 4927be6a005..ee21aac0de3 100644
--- a/htdocs/core/get_info.php
+++ b/htdocs/core/get_info.php
@@ -83,8 +83,8 @@ if (!empty($conf->global->MAIN_APPLICATION_TITLE)) {
 	$appli .= " ".DOL_VERSION;
 }
 
-if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
-	$appli .= "<br>".$langs->trans("LevelOfFeature").': '.$conf->global->MAIN_FEATURES_LEVEL;
+if (getDolGlobalInt('MAIN_FEATURES_LEVEL')) {
+	$appli .= "<br>".$langs->trans("LevelOfFeature").': '.getDolGlobalInt('MAIN_FEATURES_LEVEL');
 }
 
 $logouttext = '';
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index c71b3ad0802..25dec3e47bb 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -4537,7 +4537,7 @@ function dol_print_error($db = '', $error = '', $errors = null)
 
 	if ($_SERVER['DOCUMENT_ROOT']) {    // Mode web
 		$out .= $langs->trans("DolibarrHasDetectedError").".<br>\n";
-		if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
+		if (getDolGlobalInt('MAIN_FEATURES_LEVEL') > 0) {
 			$out .= "You use an experimental or develop level of features, so please do NOT report any bugs or vulnerability, except if problem is confirmed after moving option MAIN_FEATURES_LEVEL back to 0.<br>\n";
 		}
 		$out .= $langs->trans("InformationToHelpDiagnose").":<br>\n";
@@ -4545,7 +4545,7 @@ function dol_print_error($db = '', $error = '', $errors = null)
 		$out .= "<b>".$langs->trans("Date").":</b> ".dol_print_date(time(), 'dayhourlog')."<br>\n";
 		$out .= "<b>".$langs->trans("Dolibarr").":</b> ".DOL_VERSION." - https://www.dolibarr.org<br>\n";
 		if (isset($conf->global->MAIN_FEATURES_LEVEL)) {
-			$out .= "<b>".$langs->trans("LevelOfFeature").":</b> ".dol_htmlentities($conf->global->MAIN_FEATURES_LEVEL, ENT_COMPAT)."<br>\n";
+			$out .= "<b>".$langs->trans("LevelOfFeature").":</b> ".getDolGlobalInt('MAIN_FEATURES_LEVEL')."<br>\n";
 		}
 		if (function_exists("phpversion")) {
 			$out .= "<b>".$langs->trans("PHP").":</b> ".phpversion()."<br>\n";
diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index c66bcdfc2d8..e9e06708f7c 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -471,14 +471,6 @@ function project_timesheet_prepare_head($mode, $fuser = null)
 		$h++;
 	}
 
-	/*if ($conf->global->MAIN_FEATURES_LEVEL >= 2)
-	{
-		$head[$h][0] = DOL_URL_ROOT."/projet/activity/perline.php".($param?'?'.$param:'');
-		$head[$h][1] = $langs->trans("InputDetail");
-		$head[$h][2] = 'inputperline';
-		$h++;
-	}*/
-
 	complete_head_from_modules($conf, $langs, null, $head, $h, 'project_timesheet');
 
 	complete_head_from_modules($conf, $langs, null, $head, $h, 'project_timesheet', 'remove');
@@ -517,7 +509,7 @@ function project_admin_prepare_head()
 	$head[$h][2] = 'attributes_task';
 	$h++;
 
-	if (! empty($conf->global->MAIN_FEATURES_LEVEL) && $conf->global->MAIN_FEATURES_LEVEL >= 2) {
+	if (getDolGlobalInt('MAIN_FEATURES_LEVEL') >= 2) {
 		$langs->load("members");
 
 		$head[$h][0] = DOL_URL_ROOT.'/projet/admin/website.php';
diff --git a/htdocs/exports/export.php b/htdocs/exports/export.php
index c0a48b97222..93e20b06afe 100644
--- a/htdocs/exports/export.php
+++ b/htdocs/exports/export.php
@@ -151,7 +151,6 @@ $sqlusedforexport = '';
 $head = array();
 $upload_dir = $conf->export->dir_temp.'/'.$user->id;
 
-//$usefilters=($conf->global->MAIN_FEATURES_LEVEL > 1);
 $usefilters = 1;
 
 // Security check
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index c1f3231c737..25bc42046a9 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -523,7 +523,6 @@ if ((!defined('NOCSRFCHECK') && empty($dolibarr_nocsrfcheck) && getDolGlobalInt(
 		dol_syslog("--- Access to ".(empty($_SERVER["REQUEST_METHOD"]) ? '' : $_SERVER["REQUEST_METHOD"].' ').$_SERVER["PHP_SELF"]." refused by CSRF protection (invalid token), so we disable POST and some GET parameters - referer=".$_SERVER['HTTP_REFERER'].", action=".GETPOST('action', 'aZ09').", _GET|POST['token']=".GETPOST('token', 'alpha').", _SESSION['token']=".$_SESSION['token'], LOG_WARNING);
 		//print 'Unset POST by CSRF protection in main.inc.php.';	// Do not output anything because this create problems when using the BACK button on browsers.
 		setEventMessages('SecurityTokenHasExpiredSoActionHasBeenCanceledPleaseRetry', null, 'warnings');
-		//if ($conf->global->MAIN_FEATURES_LEVEL >= 1) setEventMessages('Unset POST and GET params by CSRF protection in main.inc.php (Token provided was not generated by the previous page).'."<br>\n".'$_SERVER[REQUEST_URI] = '.$_SERVER['REQUEST_URI'].' $_SERVER[REQUEST_METHOD] = '.$_SERVER['REQUEST_METHOD'].' GETPOST(token) = '.GETPOST('token', 'alpha').' $_SESSION[token] = '.$_SESSION['token'], null, 'warnings');
 		if (isset($_POST['id'])) $savid = ((int) $_POST['id']);
 		unset($_POST);
 		//unset($_POST['action']); unset($_POST['massaction']);
@@ -1437,8 +1436,8 @@ function top_htmlhead($head, $title = '', $disablejs = 0, $disablehead = 0, $arr
 		print '<meta name="robots" content="noindex'.($disablenofollow ? '' : ',nofollow').'">'."\n"; // Do not index
 		print '<meta name="viewport" content="width=device-width, initial-scale=1.0">'."\n"; // Scale for mobile device
 		print '<meta name="author" content="Dolibarr Development Team">'."\n";
-		if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
-			print '<meta name="MAIN_FEATURES_LEVEL" content="'.$conf->global->MAIN_FEATURES_LEVEL.'">'."\n";
+		if (getDolGlobalInt('MAIN_FEATURES_LEVEL')) {
+			print '<meta name="MAIN_FEATURES_LEVEL" content="'.getDolGlobalInt('MAIN_FEATURES_LEVEL').'">'."\n";
 		}
 		// Favicon
 		$favicon = DOL_URL_ROOT.'/theme/dolibarr_256x256_color.png';
@@ -1628,11 +1627,6 @@ function top_htmlhead($head, $title = '', $disablejs = 0, $disablehead = 0, $arr
 			} else {
 				print '<script src="'.DOL_URL_ROOT.'/includes/jquery/js/jquery.min.js'.($ext ? '?'.$ext : '').'"></script>'."\n";
 			}
-			/*if (! empty($conf->global->MAIN_FEATURES_LEVEL) && ! defined('JS_JQUERY_MIGRATE_DISABLED'))
-			{
-				if (defined('JS_JQUERY_MIGRATE') && constant('JS_JQUERY_MIGRATE')) print '<script src="'.JS_JQUERY_MIGRATE.'jquery-migrate.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
-				else print '<script src="'.DOL_URL_ROOT.'/includes/jquery/js/jquery-migrate.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
-			}*/
 			if (defined('JS_JQUERY_UI') && constant('JS_JQUERY_UI')) {
 				print '<script src="'.JS_JQUERY_UI.'jquery-ui.min.js'.($ext ? '?'.$ext : '').'"></script>'."\n";
 			} else {
@@ -1842,8 +1836,8 @@ function top_menu($head, $title = '', $target = '', $disablejs = 0, $disablehead
 			$appli .= " ".DOL_VERSION;
 		}
 
-		if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {
-			$appli .= "<br>".$langs->trans("LevelOfFeature").': '.$conf->global->MAIN_FEATURES_LEVEL;
+		if (getDolGlobalInt('MAIN_FEATURES_LEVEL')) {
+			$appli .= "<br>".$langs->trans("LevelOfFeature").': '.getDolGlobalInt('MAIN_FEATURES_LEVEL');
 		}
 
 		$logouttext = '';
diff --git a/htdocs/societe/admin/societe.php b/htdocs/societe/admin/societe.php
index 536eb0546cc..2f272ceca1c 100644
--- a/htdocs/societe/admin/societe.php
+++ b/htdocs/societe/admin/societe.php
@@ -833,7 +833,7 @@ print '</a></td>';
 print '</tr>';
 
 if (!empty($conf->expedition->enabled)) {
-	if (!empty($conf->global->MAIN_FEATURES_LEVEL)) {	// Visible on experimental only because seems to not be implemented everywhere (only on proposal)
+	if (getDolGlobalInt('MAIN_FEATURES_LEVEL') > 0) {	// Visible on experimental only because seems to not be implemented everywhere (only on proposal)
 		print '<tr class="oddeven">';
 		print '<td width="80%">'.$langs->trans("AskForPreferredShippingMethod").'</td>';
 		print '<td>&nbsp;</td>';
diff --git a/htdocs/societe/paymentmodes.php b/htdocs/societe/paymentmodes.php
index 7d0c9b154c4..995558ae2f5 100644
--- a/htdocs/societe/paymentmodes.php
+++ b/htdocs/societe/paymentmodes.php
@@ -848,7 +848,7 @@ if ($socid && $action != 'edit' && $action != 'create' && $action != 'editcard'
 		}
 	}
 
-	if (!empty($conf->stripe->enabled) && !empty($conf->stripeconnect->enabled) && $conf->global->MAIN_FEATURES_LEVEL >= 2) {
+	if (!empty($conf->stripe->enabled) && !empty($conf->stripeconnect->enabled) && getDolGlobalInt('MAIN_FEATURES_LEVEL') >= 2) {
 		$permissiontowrite = $user->rights->societe->creer;
 		$stripesupplieracc = $stripe->getStripeAccount($service, $object->id); // Get Stripe OAuth connect account (no network access here)
 
diff --git a/htdocs/stripe/admin/stripe.php b/htdocs/stripe/admin/stripe.php
index 0bb351bf977..06f417e48df 100644
--- a/htdocs/stripe/admin/stripe.php
+++ b/htdocs/stripe/admin/stripe.php
@@ -356,7 +356,7 @@ print img_picto('', 'bank_account').' ';
 $form->select_comptes($conf->global->STRIPE_BANK_ACCOUNT_FOR_PAYMENTS, 'STRIPE_BANK_ACCOUNT_FOR_PAYMENTS', 0, '', 1);
 print '</td></tr>';
 
-if ($conf->global->MAIN_FEATURES_LEVEL >= 2) {	// What is this for ?
+if (getDolGlobalInt('MAIN_FEATURES_LEVEL') >= 2) {	// What is this for ?
 	print '<tr class="oddeven"><td>';
 	print $langs->trans("BankAccountForBankTransfer").'</td><td>';
 	print img_picto('', 'bank_account').' ';
@@ -446,15 +446,6 @@ if ($conf->global->MAIN_FEATURES_LEVEL >= 2) {	// TODO Not used by current code
 	print '</td></tr>';
 }
 
-// Warehouse for automatic decrement
-//if ($conf->global->MAIN_FEATURES_LEVEL >= 2)	// warehouse to reduce stock for online payment
-//{
-//	print '<tr class="oddeven"><td>';
-//	print $langs->trans("ONLINE_PAYMENT_WAREHOUSE").'</td><td>';
-//	print $formproduct->selectWarehouses($conf->global->ONLINE_PAYMENT_WAREHOUSE, 'ONLINE_PAYMENT_WAREHOUSE', '', 1, $disabled);
-//	print '</td></tr>';
-//}
-
 print '<tr class="oddeven"><td>';
 print $langs->trans("CSSUrlForPaymentForm").'</td><td>';
 print '<input size="64" type="text" name="ONLINE_PAYMENT_CSS_URL" value="'.$conf->global->ONLINE_PAYMENT_CSS_URL.'">';
diff --git a/htdocs/theme/eldy/main_menu_fa_icons.inc.php b/htdocs/theme/eldy/main_menu_fa_icons.inc.php
index a9e5e80c009..f193af733c9 100644
--- a/htdocs/theme/eldy/main_menu_fa_icons.inc.php
+++ b/htdocs/theme/eldy/main_menu_fa_icons.inc.php
@@ -53,7 +53,7 @@ div.mainmenu.bank::before {
 	content: "\f19c";
 }
 
-<?php if ($conf->global->MAIN_FEATURES_LEVEL == 2) { ?>
+<?php if (getDolGlobalInt('MAIN_FEATURES_LEVEL') == 2) { ?>
 /* TESTING USAGE OF SVG WITHOUT FONT */
 div.mainmenu.cashdesk {
 	line-height: 26px;