diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c6b451..e1bf851 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+2.3 - 2023.07.29
+* require Dotclear 2.27
+* require PHP 7.4+
+* use new svg icon
+* update to Dotclear 2.27-dev
+
 2.2.1 - 2023.05.13
 * require dotclear 2.26
 * cleanup for dc2.26 stable
diff --git a/README.md b/README.md
index 1ba5caf..3a68886 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Release](https://img.shields.io/github/v/release/JcDenis/moreCSS)](https://github.com/JcDenis/moreCSS/releases)
 [![Date](https://img.shields.io/github/release-date/JcDenis/moreCSS)](https://github.com/JcDenis/moreCSS/releases)
 [![Issues](https://img.shields.io/github/issues/JcDenis/moreCSS)](https://github.com/JcDenis/moreCSS/issues)
-[![Dotclear](https://img.shields.io/badge/dotclear-v2.26-blue.svg)](https://fr.dotclear.org/download)
+[![Dotclear](https://img.shields.io/badge/dotclear-v2.27-blue.svg)](https://fr.dotclear.org/download)
 [![Dotaddict](https://img.shields.io/badge/dotaddict-official-green.svg)](https://plugins.dotaddict.org/dc2/details/moreCSS)
 [![License](https://img.shields.io/github/license/JcDenis/moreCSS)](https://github.com/JcDenis/moreCSS/blob/master/LICENSE)
 
@@ -19,8 +19,9 @@ without editing it.
 
  _moreCSS_ requires: 
 
-  * content admin permissions to manage CSS
-  * Dotclear 2.26
+ * content admin permissions to manage CSS
+ * Dotclear 2.27
+ * PHP 7.4+
 
 ## USAGE
 
diff --git a/_define.php b/_define.php
index 83e1651..589e7aa 100644
--- a/_define.php
+++ b/_define.php
@@ -10,7 +10,7 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_RC_PATH') || is_null(dcCore::app()->auth)) {
+if (!defined('DC_RC_PATH')) {
     return null;
 }
 
@@ -18,9 +18,9 @@ $this->registerModule(
     'Style sheet',
     'Another CSS stylesheet for the active theme',
     'Osku and contributors',
-    '2.2.1',
+    '2.3',
     [
-        'requires'    => [['core', '2.26']],
+        'requires'    => [['core', '2.27']],
         'permissions' => dcCore::app()->auth->makePermissions([
             dcCore::app()->auth::PERMISSION_CONTENT_ADMIN,
         ]),
diff --git a/dcstore.xml b/dcstore.xml
index 57409e3..a54588e 100644
--- a/dcstore.xml
+++ b/dcstore.xml
@@ -2,11 +2,11 @@
 <modules xmlns:da="http://dotaddict.org/da/">
   <module id="moreCSS">
     <name>Style sheet</name>
-    <version>2.2.1</version>
+    <version>2.3</version>
     <author>Osku and contributors</author>
     <desc>Another CSS stylesheet for the active theme</desc>
-    <file>https://github.com/JcDenis/moreCSS/releases/download/v2.2.1/plugin-moreCSS.zip</file>
-    <da:dcmin>2.26</da:dcmin>
+    <file>https://github.com/JcDenis/moreCSS/releases/download/v2.3/plugin-moreCSS.zip</file>
+    <da:dcmin>2.27</da:dcmin>
     <da:details>https://plugins.dotaddict.org/dc2/details/moreCSS</da:details>
     <da:support>http://forum.dotclear.org/viewtopic.php?id=44908</da:support>
   </module>
diff --git a/src/Backend.php b/src/Backend.php
index 9b53c85..fc8ef90 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -14,44 +14,34 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\moreCSS;
 
-use dcAdmin;
 use dcCore;
-use dcFavorites;
-use dcNsProcess;
-use dcPage;
+use Dotclear\Core\Process;
+use Dotclear\Core\Backend\{
+    Favorites,
+    Menus
+};
 
-class Backend extends dcNsProcess
+class Backend extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN');
-
-        return static::$init;
+        return self::status(My::checkContext(My::BACKEND));
     }
 
     public static function process(): bool
     {
-        if (!static::$init || is_null(dcCore::app()->auth) || is_null(dcCore::app()->blog) || is_null(dcCore::app()->adminurl)) {
+        if (!self::status()) {
             return false;
         }
 
-        dcCore::app()->menu[dcAdmin::MENU_BLOG]->addItem(
-            My::name(),
-            dcCore::app()->adminurl->get('admin.plugin.' . My::id()),
-            [dcPage::getPF(My::id() . '/icon.svg')],
-            preg_match('/' . preg_quote((string) dcCore::app()->adminurl->get('admin.plugin.' . My::id())) . '(&.*)?$/', $_SERVER['REQUEST_URI']),
-            dcCore::app()->auth->check(dcCore::app()->auth->makePermissions([dcCore::app()->auth::PERMISSION_CONTENT_ADMIN]), dcCore::app()->blog->id)
-        );
+        My::addBackendMenuItem(Menus::MENU_BLOG);
 
-        dcCore::app()->addBehavior('adminDashboardFavoritesV2', function (dcFavorites $favs): void {
-            if (is_null(dcCore::app()->auth) || is_null(dcCore::app()->adminurl)) {
-                return;
-            }
+        dcCore::app()->addBehavior('adminDashboardFavoritesV2', function (Favorites $favs): void {
             $favs->register(My::id(), [
                 'title'       => My::name(),
-                'url'         => dcCore::app()->adminurl->get('admin.plugin.' . My::id()),
-                'small-icon'  => [dcPage::getPF(My::id() . '/icon.svg')],
-                'large-icon'  => [dcPage::getPF(My::id() . '/icon.svg')],
+                'url'         => My::manageUrl(),
+                'small-icon'  => My::icons(),
+                'large-icon'  => My::icons(),
                 'permissions' => dcCore::app()->auth->makePermissions([dcCore::app()->auth::PERMISSION_CONTENT_ADMIN]),
             ]);
         });
diff --git a/src/Frontend.php b/src/Frontend.php
index 26f8724..617cc65 100644
--- a/src/Frontend.php
+++ b/src/Frontend.php
@@ -15,28 +15,23 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
-use dcNsProcess;
 use dcUtils;
+use Dotclear\Core\Process;
 
-class Frontend extends dcNsProcess
+class Frontend extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_RC_PATH');
-
-        return static::$init;
+        return self::status(My::checkContext(My::FRONTEND));
     }
 
     public static function process(): bool
     {
-        if (!static::$init || is_null(dcCore::app()->blog) || !dcCore::app()->blog->settings->get('themes')->get('morecss_active')) {
+        if (!self::status() || !dcCore::app()->blog->settings->get('themes')->get('morecss_active')) {
             return false;
         }
 
         dcCore::app()->addBehavior('publicHeadContent', function (): void {
-            if (is_null(dcCore::app()->blog)) {
-                return;
-            }
             $css = (string) base64_decode((string) dcCore::app()->blog->settings->get('themes')->get('morecss_min'));
             if (!empty($css)) {
                 echo dcUtils::cssLoad(
diff --git a/src/Install.php b/src/Install.php
index 3918d4f..0339cc9 100644
--- a/src/Install.php
+++ b/src/Install.php
@@ -15,22 +15,19 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
-use dcNsProcess;
+use Dotclear\Core\Process;
 use Exception;
 
-class Install extends dcNsProcess
+class Install extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN')
-            && dcCore::app()->newVersion(My::id(), dcCore::app()->plugins->moduleInfo(My::id(), 'version'));
-
-        return static::$init;
+        return self::status(My::checkContext(My::INSTALL));
     }
 
     public static function process(): bool
     {
-        if (!static::$init || is_null(dcCore::app()->blog)) {
+        if (!self::status() || is_null(dcCore::app()->blog)) {
             return false;
         }
 
diff --git a/src/Manage.php b/src/Manage.php
index 45423c9..4f4de29 100644
--- a/src/Manage.php
+++ b/src/Manage.php
@@ -15,8 +15,11 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
-use dcNsProcess;
-use dcPage;
+use Dotclear\Core\Process;
+use Dotclear\Core\Backend\{
+    Notices,
+    Page
+};
 use Dotclear\Helper\Html\Form\{
     Checkbox,
     Form,
@@ -29,22 +32,16 @@ use Dotclear\Helper\Html\Form\{
 use Dotclear\Helper\Html\Html;
 use Exception;
 
-class Manage extends dcNsProcess
+class Manage extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN')
-            && !is_null(dcCore::app()->auth) && !is_null(dcCore::app()->blog)
-            && dcCore::app()->auth->check(dcCore::app()->auth->makePermissions([
-                dcCore::app()->auth::PERMISSION_CONTENT_ADMIN,
-            ]), dcCore::app()->blog->id);
-
-        return static::$init;
+        return self::status(My::checkContext(My::MANAGE));
     }
 
     public static function process(): bool
     {
-        if (!static::$init || is_null(dcCore::app()->blog) || is_null(dcCore::app()->adminurl)) {
+        if (!self::status()) {
             return false;
         }
 
@@ -68,12 +65,10 @@ class Manage extends dcNsProcess
                 $css_min = str_replace([' , ', ' ,', ', '], ',', $css_min);
                 $s->put('morecss_min', base64_encode($css_min));
 
-                dcPage::addSuccessNotice(
+                Notices::addSuccessNotice(
                     __('Configuration successfully updated.')
                 );
-                dcCore::app()->adminurl->redirect(
-                    'admin.plugin.' . My::id()
-                );
+                My::redirect();
             } catch (Exception $e) {
                 dcCore::app()->error->add($e->getMessage());
             }
@@ -84,28 +79,28 @@ class Manage extends dcNsProcess
 
     public static function render(): void
     {
-        if (!static::$init || is_null(dcCore::app()->auth) || is_null(dcCore::app()->auth->user_prefs) || is_null(dcCore::app()->blog)) {
+        if (!self::status()) {
             return;
         }
 
         $s = dcCore::app()->blog->settings->get('themes');
 
-        dcPage::openModule(
+        Page::openModule(
             My::name(),
             (
                 dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax') ?
-                dcPage::jsJson('dotclear_colorsyntax', ['colorsyntax' => dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax')]) .
-                dcPage::jsLoadCodeMirror(dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax_theme'))
+                Page::jsJson('dotclear_colorsyntax', ['colorsyntax' => dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax')]) .
+                Page::jsLoadCodeMirror(dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax_theme'))
                 : ''
             )
         );
 
         echo
-        dcPage::breadcrumb([
+        Page::breadcrumb([
             Html::escapeHTML(dcCore::app()->blog->name) => '',
             My::name()                                  => '',
         ]) .
-        dcPage::notices() .
+        Notices::getNotices() .
 
         (new Form('file-form'))->method('post')->action(dcCore::app()->admin->getPageURL())->fields([
             (new Para())->items([
@@ -125,11 +120,11 @@ class Manage extends dcNsProcess
 
         if (dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax')) {
             echo
-            dcPage::jsJson('theme_editor_mode', ['mode' => 'css']) .
-            dcPage::jsModuleLoad('themeEditor/js/mode.js') .
-            dcPage::jsRunCodeMirror('editor', 'morecss', 'dotclear', dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax_theme'));
+            Page::jsJson('theme_editor_mode', ['mode' => 'css']) .
+            Page::jsLoad(dcCore::app()->blog->getPF('themeEditor/js/mode.js')) .
+            Page::jsRunCodeMirror('editor', 'morecss', 'dotclear', dcCore::app()->auth->user_prefs->get('interface')->get('colorsyntax_theme'));
         }
 
-        dcPage::closeModule();
+        Page::closeModule();
     }
 }
diff --git a/src/My.php b/src/My.php
index fae9e31..010702c 100644
--- a/src/My.php
+++ b/src/My.php
@@ -15,35 +15,17 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
+use Dotclear\Module\MyPlugin;
 
 /**
  * This module definitions.
  */
-class My
+class My extends MyPlugin
 {
-    /**
-     * This module id.
-     */
-    public static function id(): string
+    public static function checkCustomContext(int $context): ?bool
     {
-        return basename(dirname(__DIR__));
-    }
-
-    /**
-     * This module name.
-     */
-    public static function name(): string
-    {
-        $name = dcCore::app()->plugins->moduleInfo(self::id(), 'name');
-
-        return __(is_string($name) ? $name : self::id());
-    }
-
-    /**
-     * This module path.
-     */
-    public static function path(): string
-    {
-        return dirname(__DIR__);
+        return in_array($context, [My::BACKEND, My::MENU]) ?
+            dcCore::app()->auth->check(dcCore::app()->auth->makePermissions([dcCore::app()->auth::PERMISSION_CONTENT_ADMIN]), dcCore::app()->blog->id)
+            : null;
     }
 }
diff --git a/src/Prepend.php b/src/Prepend.php
index c2ebcf7..0e65772 100644
--- a/src/Prepend.php
+++ b/src/Prepend.php
@@ -15,20 +15,18 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
-use dcNsProcess;
+use Dotclear\Core\Process;
 
-class Prepend extends dcNsProcess
+class Prepend extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_RC_PATH');
-
-        return static::$init;
+        return self::status(My::checkContext(My::PREPEND));
     }
 
     public static function process(): bool
     {
-        if (!static::$init) {
+        if (!self::status()) {
             return false;
         }
 
@@ -37,9 +35,6 @@ class Prepend extends dcNsProcess
             'morecss.css',
             '^morecss\.css(.*?)$',
             function (string $args): void {
-                if (is_null(dcCore::app()->blog)) {
-                    return;
-                }
                 header('Content-Type: text/css; charset=UTF-8');
 
                 echo "/* CSS for plugin moreCss */ \n";
diff --git a/src/Uninstall.php b/src/Uninstall.php
index 64d3e05..a33d25c 100644
--- a/src/Uninstall.php
+++ b/src/Uninstall.php
@@ -15,21 +15,19 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\moreCSS;
 
 use dcCore;
-use dcNsProcess;
+use Dotclear\Core\Process;
 use Dotclear\Plugin\Uninstaller\Uninstaller;
 
-class Uninstall extends dcNsProcess
+class Uninstall extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN');
-
-        return static::$init;
+        return self::status(My::checkContext(My::UNINSTALL));
     }
 
     public static function process(): bool
     {
-        if (!static::$init || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
+        if (!self::status() || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
             return false;
         }