diff --git a/src/Backend.php b/src/Backend.php
new file mode 100644
index 0000000..57bdc4d
--- /dev/null
+++ b/src/Backend.php
@@ -0,0 +1,48 @@
+<?php
+/**
+ * @brief fac, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis and Contributors
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\fac;
+
+use dcCore;
+use dcNsProcess;
+
+class Backend extends dcNsProcess
+{
+    public static function init(): bool
+    {
+        static::$init = defined('DC_CONTEXT_ADMIN');
+
+        return static::$init;
+    }
+
+    public static function process(): bool
+    {
+        if (!static::$init) {
+            return false;
+        }
+
+        dcCore::app()->addBehaviors([
+            'adminBlogPreferencesFormV2'    => [BackendBehaviors::class, 'adminBlogPreferencesFormV2'],
+            'adminBeforeBlogSettingsUpdate' => [BackendBehaviors::class, 'adminBeforeBlogSettingsUpdate'],
+            'adminPostHeaders'              => [BackendBehaviors::class, 'adminPostHeaders'],
+            'adminPostFormItems'            => [BackendBehaviors::class, 'adminPostFormItems'],
+            'adminAfterPostCreate'          => [BackendBehaviors::class, 'adminAfterPostSave'],
+            'adminAfterPostUpdate'          => [BackendBehaviors::class, 'adminAfterPostSave'],
+            'adminBeforePostDelete'         => [BackendBehaviors::class, 'adminBeforePostDelete'],
+            'adminPostsActions'             => [BackendBehaviors::class, 'adminPostsActions'],
+        ]);
+
+        return true;
+    }
+}
diff --git a/src/BackendBehaviors.php b/src/BackendBehaviors.php
index aac7174..e12df5b 100644
--- a/src/BackendBehaviors.php
+++ b/src/BackendBehaviors.php
@@ -10,35 +10,47 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_CONTEXT_ADMIN')) {
-    return null;
-}
+declare(strict_types=1);
 
-dcCore::app()->blog->settings->addNamespace(basename(__DIR__));
+namespace Dotclear\Plugin\fac;
 
-# Admin behaviors
-dcCore::app()->addBehavior('adminBlogPreferencesFormV2', ['facAdmin', 'adminBlogPreferencesFormV2']);
-dcCore::app()->addBehavior('adminBeforeBlogSettingsUpdate', ['facAdmin', 'adminBeforeBlogSettingsUpdate']);
-dcCore::app()->addBehavior('adminPostHeaders', ['facAdmin', 'adminPostHeaders']);
-dcCore::app()->addBehavior('adminPostFormItems', ['facAdmin', 'adminPostFormItems']);
-dcCore::app()->addBehavior('adminAfterPostCreate', ['facAdmin', 'adminAfterPostSave']);
-dcCore::app()->addBehavior('adminAfterPostUpdate', ['facAdmin', 'adminAfterPostSave']);
-dcCore::app()->addBehavior('adminBeforePostDelete', ['facAdmin', 'adminBeforePostDelete']);
-dcCore::app()->addBehavior('adminPostsActions', ['facAdmin', 'adminPostsActions']);
+use cursor;
+use ArrayObject;
+use dcAuth;
+use dcCore;
+use dcPage;
+use dcPostsActions;
+use dcRecord;
+use dcSettings;
+use Dotclear\Helper\Html\Html;
+use Dotclear\Helper\Html\Form\{
+    Checkbox,
+    Div,
+    Form,
+    Hidden,
+    Input,
+    Label,
+    Note,
+    Para,
+    Select,
+    Submit,
+    Text
+};
+use Exception;
 
 /**
  * @ingroup DC_PLUGIN_FAC
  * @brief Linked feed to entries - admin methods.
  * @since 2.6
  */
-class facAdmin
+class BackendBehaviors
 {
     /**
      * Get combos of types of supported public pages
      *
      * @return array         List of post type and name
      */
-    public static function getPostsTypes()
+    public static function getPostsTypes(): array
     {
         $types = [
             __('home page')      => 'default',
@@ -48,8 +60,8 @@ class facAdmin
             __('category pages') => 'category',
             __('entries feed')   => 'feed',
         ];
-        if (dcCore::app()->plugins->moduleExists('muppet')) {
-            foreach (muppet::getPostTypes() as $k => $v) {
+        if (dcCore::app()->plugins->moduleExists('muppet') && class_exists('\muppet')) {
+            foreach (\muppet::getPostTypes() as $k => $v) {
                 $types[sprintf(
                     __('"%s" pages from extension muppet'),
                     $v['name']
@@ -65,8 +77,20 @@ class facAdmin
      *
      * @param  dcSettings   $blog_settings  dcSettings instance
      */
-    public static function adminBlogPreferencesFormV2(dcSettings $blog_settings)
+    public static function adminBlogPreferencesFormV2(dcSettings $blog_settings): void
     {
+        $lines               = '';
+        $fac_public_tpltypes = json_decode($blog_settings->get(My::id())->get('public_tpltypes'), true);
+        if (!is_array($fac_public_tpltypes)) {
+            $fac_public_tpltypes = [];
+        }
+        foreach (self::getPostsTypes() as $k => $v) {
+            $lines .= (new Para())->items([
+                (new Checkbox(['fac_public_tpltypes[]', 'fac_public_tpltypes' . $k], in_array($v, $fac_public_tpltypes)))->value($v),
+                (new Label(__($k), Label::OUTSIDE_LABEL_AFTER))->for('fac_public_tpltypes' . $k)->class('classic'),
+            ])->render();
+        }
+
         echo
         '<div class="fieldset"><h4 id="fac_params">Feed after content</h4>' .
         '<p class="form-note">' .
@@ -74,49 +98,40 @@ class facAdmin
         '</p>';
         if (dcCore::app()->auth->isSuperAdmin()) {
             echo '<p><a href="' . dcCore::app()->adminurl->get('admin.plugins', [
-                'module' => basename(__DIR__),
+                'module' => My::id(),
                 'conf'   => 1,
                 'redir'  => dcCore::app()->adminurl->get('admin.blog.pref') . '#fac_params',
             ]) . '">' . __('Configure formats') . '</a></p>';
         }
-        echo
-        '<div class="two-cols">' .
-        '<div class="col">' .
-        '<h5>' . __('Activation') . '</h5>' .
-        '<p><label class="classic">' .
-        form::checkbox('fac_active', '1', (bool) $blog_settings->get(basename(__DIR__))->get('active')) .
-        __('Enable "fac" extension') . '</label></p>' .
-        '<p class="form-note">' .
-        __('You can manage related feed to display for each post with a predefined format.') .
-        '</p>' .
-        '<h5>' . __('Feed') . '</h5>' .
-        '<p><label for="fac_defaultfeedtitle">' . __('Default title') . '</label>' .
-        form::field('fac_defaultfeedtitle', 65, 255, (string) $blog_settings->get(basename(__DIR__))->get('defaultfeedtitle')) . '</p>' .
-        '<p class="form-note">' . __('Use %T to insert title of feed.') . '</p>' .
-        '<p><label class="classic" for="fac_showfeeddesc">' .
-        form::checkbox('fac_showfeeddesc', 1, (bool) $blog_settings->get(basename(__DIR__))->get('showfeeddesc')) .
-        __('Show description of feed') . '</label></p>' .
-        '</div>' .
-        '<div class="col">' .
-        '<h5>' . __('Show feed after content on:') . '</h5>';
-
-        $fac_public_tpltypes = json_decode($blog_settings->get(basename(__DIR__))->get('public_tpltypes'), true);
-        if (!is_array($fac_public_tpltypes)) {
-            $fac_public_tpltypes = [];
-        }
-        foreach (self::getPostsTypes() as $k => $v) {
-            echo '
-            <p><label class="classic" for="fac_public_tpltypes' . $k . '">' .
-            form::checkbox(
-                ['fac_public_tpltypes[]', 'fac_public_tpltypes' . $k],
-                $v,
-                in_array($v, $fac_public_tpltypes)
-            ) . __($k) . '</label></p>';
-        }
 
         echo
-        '</div>' .
-        '</div>' .
+        (new Div())->class('two-cols')->items([
+            (new Div())->class('col')->items([
+                (new Text('h5', Html::escapeHTML(__('Activation')))),
+                // active
+                (new Para())->items([
+                    (new Checkbox('fac_active', (bool) $blog_settings->get(My::id())->get('active')))->value(1),
+                    (new Label(__('Enable "fac" extension'), Label::OUTSIDE_LABEL_AFTER))->for('fac_active')->class('classic'),
+                ]),
+                (new Note())->text(__('You can manage related feed to display for each post with a predefined format.'))->class('form-note'),
+                (new Text('h5', Html::escapeHTML(__('Feed')))),
+                // defaultfeedtitle
+                (new Para())->items([
+                    (new Label(__('Default title')))->for('fac_defaultfeedtitle'),
+                    (new Input('fac_defaultfeedtitle'))->size(70)->maxlenght(255)->value((string) $blog_settings->get(My::id())->get('defaultfeedtitle')),
+                ]),
+                (new Note())->text(__('Use %T to insert title of feed.'))->class('form-note'),
+                // showfeeddesc
+                (new Para())->items([
+                    (new Checkbox('fac_showfeeddesc', (bool) $blog_settings->get(My::id())->get('showfeeddesc')))->value(1),
+                    (new Label(__('Show description of feed'), Label::OUTSIDE_LABEL_AFTER))->for('fac_showfeeddesc')->class('classic'),
+                ]),
+            ]),
+            (new Div())->class('col')->items([
+                (new Text('h5', Html::escapeHTML(__('Show feed after content on:')))),
+                (new Text('', $lines)),
+            ]),
+        ])->render() .
         '<br class="clear" />' .
         '</div>';
     }
@@ -126,12 +141,12 @@ class facAdmin
      *
      * @param  dcSettings   $blog_settings  dcSettings instance
      */
-    public static function adminBeforeBlogSettingsUpdate(dcSettings $blog_settings)
+    public static function adminBeforeBlogSettingsUpdate(dcSettings $blog_settings): void
     {
-        $blog_settings->get(basename(__DIR__))->put('active', !empty($_POST['fac_active']));
-        $blog_settings->get(basename(__DIR__))->put('public_tpltypes', json_encode($_POST['fac_public_tpltypes']));
-        $blog_settings->get(basename(__DIR__))->put('defaultfeedtitle', (string) $_POST['fac_defaultfeedtitle']);
-        $blog_settings->get(basename(__DIR__))->put('showfeeddesc', !empty($_POST['fac_showfeeddesc']));
+        $blog_settings->get(My::id())->put('active', !empty($_POST['fac_active']));
+        $blog_settings->get(My::id())->put('public_tpltypes', json_encode($_POST['fac_public_tpltypes']));
+        $blog_settings->get(My::id())->put('defaultfeedtitle', (string) $_POST['fac_defaultfeedtitle']);
+        $blog_settings->get(My::id())->put('showfeeddesc', !empty($_POST['fac_showfeeddesc']));
     }
 
     /**
@@ -139,9 +154,9 @@ class facAdmin
      *
      * @return string HTML head
      */
-    public static function adminPostHeaders()
+    public static function adminPostHeaders(): string
     {
-        return dcPage::jsModuleLoad(basename(__DIR__) . '/js/admin.js');
+        return dcPage::jsModuleLoad(My::id() . '/js/backend.js');
     }
 
     /**
@@ -149,12 +164,12 @@ class facAdmin
      *
      * @param  ArrayObject $main_items    Main items
      * @param  ArrayObject $sidebar_items Sidebar items
-     * @param  record      $post          Post record or null
+     * @param  null|dcRecord      $post          Post record or null
      */
-    public static function adminPostFormItems(ArrayObject $main_items, ArrayObject $sidebar_items, $post)
+    public static function adminPostFormItems(ArrayObject $main_items, ArrayObject $sidebar_items, ?dcRecord $post): void
     {
-        if (!dcCore::app()->blog->settings->get(basename(__DIR__))->get('active')) {
-            return null;
+        if (!dcCore::app()->blog->settings->get(My::id())->get('active')) {
+            return;
         }
 
         # Get existing linked feed
@@ -162,17 +177,17 @@ class facAdmin
         if ($post) {
             $rs = dcCore::app()->meta->getMetadata([
                 'meta_type' => 'fac',
-                'post_id'   => $post->post_id,
+                'post_id'   => $post->f('post_id'),
                 'limit'     => 1,
             ]);
-            $fac_url = $rs->isEmpty() ? '' : $rs->meta_id;
+            $fac_url = $rs->isEmpty() ? '' : $rs->f('meta_id');
 
             $rs = dcCore::app()->meta->getMetadata([
                 'meta_type' => 'facformat',
-                'post_id'   => $post->post_id,
+                'post_id'   => $post->f('post_id'),
                 'limit'     => 1,
             ]);
-            $fac_format = $rs->isEmpty() ? '' : $rs->meta_id;
+            $fac_format = $rs->isEmpty() ? '' : $rs->f('meta_id');
         }
 
         # Set linked feed form items
@@ -185,11 +200,11 @@ class facAdmin
      * @param  cursor $cur      Current post cursor
      * @param  integer $post_id Post id
      */
-    public static function adminAfterPostSave(cursor $cur, $post_id)
+    public static function adminAfterPostSave(cursor $cur, int $post_id): void
     {
         if (!isset($_POST['fac_url'])
          || !isset($_POST['fac_format'])) {
-            return null;
+            return;
         }
 
         # Delete old linked feed
@@ -204,7 +219,7 @@ class facAdmin
      *
      * @param  integer $post_id Post id
      */
-    public static function adminBeforePostDelete($post_id)
+    public static function adminBeforePostDelete(int $post_id): void
     {
         self::delFeed($post_id);
     }
@@ -214,26 +229,26 @@ class facAdmin
      *
      * @param  dcPostsActions $pa   dcPostsActionsPage instance
      */
-    public static function adminPostsActions(dcPostsActions $pa)
+    public static function adminPostsActions(dcPostsActions $pa): void
     {
-        if (!dcCore::app()->blog->settings->get(basename(__DIR__))->get('active')) {
-            return null;
+        if (!dcCore::app()->blog->settings->get(My::id())->get('active')) {
+            return;
         }
 
         $pa->addAction(
             [__('Linked feed') => [__('Add feed') => 'fac_add']],
-            ['facAdmin', 'callbackAdd']
+            [self::class, 'callbackAdd']
         );
 
         if (!dcCore::app()->auth->check(dcCore::app()->auth->makePermissions([
             dcAuth::PERMISSION_DELETE,
             dcAuth::PERMISSION_CONTENT_ADMIN,
         ]), dcCore::app()->blog->id)) {
-            return null;
+            return;
         }
         $pa->addAction(
             [__('Linked feed') => [__('Remove feed') => 'fac_remove']],
-            ['facAdmin', 'callbackRemove']
+            [self::class, 'callbackRemove']
         );
     }
 
@@ -243,7 +258,7 @@ class facAdmin
      * @param  dcPostsActions $pa   dcPostsActions instance
      * @param  ArrayObject        $post _POST actions
      */
-    public static function callbackRemove(dcPostsActions $pa, ArrayObject $post)
+    public static function callbackRemove(dcPostsActions $pa, ArrayObject $post): void
     {
         # No entry
         $posts_ids = $pa->getIDs();
@@ -274,7 +289,7 @@ class facAdmin
      * @param  dcPostsActions $pa   dcPostsActions instance
      * @param  ArrayObject        $post _POST actions
      */
-    public static function callbackAdd(dcPostsActions $pa, ArrayObject $post)
+    public static function callbackAdd(dcPostsActions $pa, ArrayObject $post): void
     {
         # No entry
         $posts_ids = $pa->getIDs();
@@ -297,24 +312,21 @@ class facAdmin
         } else {
             $pa->beginPage(
                 dcPage::breadcrumb([
-                    html::escapeHTML(dcCore::app()->blog->name) => '',
+                    Html::escapeHTML(dcCore::app()->blog->name) => '',
                     $pa->getCallerTitle()                       => $pa->getRedirection(true),
                     __('Linked feed to this selection')         => '',
                 ])
             );
 
             echo
-            '<form action="' . $pa->getURI() . '" method="post">' .
-            $pa->getCheckboxes() .
-
-            self::formFeed() .
-
-            '<p>' .
-            dcCore::app()->formNonce() .
-            $pa->getHiddenFields() .
-            form::hidden(['action'], 'fac_add') .
-            '<input type="submit" value="' . __('Save') . '" /></p>' .
-            '</form>';
+            (new Form('fac_form'))->action($pa->getURI())->method('post')->fields([
+                (new Text('', $pa->getCheckboxes() . self::formFeed())),
+                (new Para())->items([
+                    (new Text('', dcCore::app()->formNonce() . $pa->getHiddenFields())),
+                    (new Hidden(['action'], 'fac_add')),
+                    (new Submit(['save']))->value(__('Save')),
+                ]),
+            ])->render();
 
             $pa->endPage();
         }
@@ -325,36 +337,29 @@ class facAdmin
      *
      * @param  string $url    Feed URL
      * @param  string $format Feed format
-     * @return null|string         Feed form content
+     * @return string         Feed form content
      */
-    protected static function formFeed($url = '', $format = '')
+    protected static function formFeed(string $url = '', string $format = ''): string
     {
-        if (!dcCore::app()->blog->settings->get(basename(__DIR__))->get('active')) {
-            return null;
+        if (!dcCore::app()->blog->settings->get(My::id())->get('active')) {
+            return '';
         }
 
         return
-        '<div id="fac">' .
-        '<h5>' . __('Linked feed') . '</h5>' .
-        '<p><label for="fac_url">' .
-        __('Feed URL:') . '</label>' .
-        form::field(
-            'fac_url',
-            60,
-            255,
-            $url,
-            'maximal'
-        ) . '</p>' .
-        '<p><label for="fac_format">' .
-        __('Format:') . '</label>' .
-        form::combo(
-            'fac_format',
-            self::comboFac(),
-            $format,
-            'maximal'
-        ) . '</p>' .
-        ($url ? '<p><a href="' . $url . '" title="' . $url . '">' . __('view feed') . '</a></p>' : '') .
-        '</div>';
+        (new Div('fac'))->items([
+            (new Text('h5', __('Linked feed'))),
+            // fac_url
+            (new Para())->items([
+                (new Label(__('Feed URL:')))->for('fac_url')->class('required'),
+                (new Input('fac_url'))->size(60)->maxlenght(255)->value($url),
+            ]),
+            // fac_format
+            (new Para())->items([
+                (new Label(__('Format:')))->for('fac_format'),
+                (new Select('fac_format'))->default($format)->items(self::comboFac()),
+            ]),
+            (new Text('', $url ? '<p><a href="' . $url . '" title="' . $url . '">' . __('view feed') . '</a></p>' : '')),
+        ])->render();
     }
 
     /**
@@ -362,9 +367,9 @@ class facAdmin
      *
      * @return array        List of fac formats
      */
-    protected static function comboFac()
+    protected static function comboFac(): array
     {
-        $formats = json_decode(dcCore::app()->blog->settings->get(basename(__DIR__))->get('formats'), true);
+        $formats = json_decode(dcCore::app()->blog->settings->get(My::id())->get('formats'), true);
         if (!is_array($formats) || empty($formats)) {
             return [];
         }
@@ -382,7 +387,7 @@ class facAdmin
      *
      * @param  integer $post_id Post id
      */
-    protected static function delFeed($post_id)
+    protected static function delFeed(int $post_id): void
     {
         $post_id = (int) $post_id;
         dcCore::app()->meta->delPostMeta($post_id, 'fac');
@@ -395,11 +400,11 @@ class facAdmin
      * @param  integer $post_id Post id
      * @param  array|ArrayObject   $options Feed options
      */
-    protected static function addFeed($post_id, $options)
+    protected static function addFeed(int $post_id, array|ArrayObject $options): void
     {
         if (empty($options['fac_url'])
          || empty($options['fac_format'])) {
-            return null;
+            return;
         }
 
         $post_id = (int) $post_id;
diff --git a/src/Config.php b/src/Config.php
index ce3e0d7..c6e8f8f 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -10,496 +10,298 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_CONTEXT_MODULE')) {
-    return null;
-}
+declare(strict_types=1);
 
-if (!dcCore::app()->auth->isSuperAdmin()) {
-    return null;
-}
+namespace Dotclear\Plugin\fac;
 
-$redir = empty($_REQUEST['redir']) ?
-    dcCore::app()->admin->list->getURL() . '#plugins' : $_REQUEST['redir'];
+use dcCore;
+use dcPage;
+use dcNsProcess;
+use Dotclear\Helper\Html\Html;
+use Dotclear\Helper\Html\Form\{
+    Checkbox,
+    Div,
+    Input,
+    Label,
+    Note,
+    Number,
+    Para,
+    Text
+};
+use Exception;
 
-# -- Get settings --
-$s = dcCore::app()->blog->settings->addNamespace(basename(__DIR__));
+class Config extends dcNsProcess
+{
+    public static function init(): bool
+    {
+        static::$init == defined('DC_CONTEXT_ADMIN')
+            && dcCore::app()->auth?->isSuperAdmin();
 
-$fac_formats = json_decode($s->get('formats'), true);
+        return static::$init;
+    }
 
-if (!is_array($fac_formats)) {
-    $fac_formats = [];
-}
+    public static function process(): bool
+    {
+        if (!static::$init) {
+            return false;
+        }
 
-# -- Set settings --
-if (!empty($_POST['save'])) {
-    try {
-        $fac_formats = [];
+        $redir = empty($_REQUEST['redir']) ?
+            dcCore::app()->admin->__get('list')->getURL() . '#plugins' : $_REQUEST['redir'];
 
-        foreach ($_POST['fac_formats'] as $uid => $f) {
-            if (!empty($f['name'])) {
-                $fac_formats[$uid] = $f;
+        # -- Get settings --
+        $s = dcCore::app()->blog->settings->get(My::id());
+
+        $fac_formats = json_decode($s->get('formats'), true);
+
+        if (!is_array($fac_formats)) {
+            $fac_formats = [];
+        }
+
+        # -- Set settings --
+        if (!empty($_POST['save'])) {
+            try {
+                $fac_formats = [];
+
+                foreach ($_POST['fac_formats'] as $uid => $f) {
+                    if (!empty($f['name'])) {
+                        $fac_formats[$uid] = $f;
+                    }
+                }
+
+                // fix 2021.08.21 : formats are now global
+                $s->drop('formats');
+                $s->put(
+                    'formats',
+                    json_encode($fac_formats),
+                    'string',
+                    'Formats of feeds contents',
+                    true,
+                    true
+                );
+
+                dcCore::app()->blog->triggerBlog();
+
+                dcPage::addSuccessNotice(
+                    __('Configuration successfully updated.')
+                );
+                dcCore::app()->adminurl?->redirect(
+                    'admin.plugins',
+                    ['module' => My::id(), 'conf' => 1, 'redir' => dcCore::app()->admin->__get('list')->getRedir()]
+                );
+            } catch (Exception $e) {
+                dcCore::app()->error->add($e->getMessage());
             }
         }
 
-        // fix 2021.08.21 : formats are now global
-        $s->drop('formats');
-        $s->put(
-            'formats',
-            json_encode($fac_formats),
-            'string',
-            'Formats of feeds contents',
-            true,
-            true
-        );
-
-        dcCore::app()->blog->triggerBlog();
-
-        dcAdminNotices::addSuccessNotice(
-            __('Configuration successfully updated.')
-        );
-        http::redirect(
-            dcCore::app()->admin->list->getURL('module=' . basename(__DIR__) . '&conf=1&redir=' . dcCore::app()->admin->list->getRedir())
-        );
-    } catch (Exception $e) {
-        dcCore::app()->error->add($e->getMessage());
-    }
-}
-
-# -- Display form --
-
-$i = 1;
-foreach ($fac_formats as $uid => $f) {
-    if (empty($f['name'])) {
-        continue;
+        return true;
     }
 
-    echo '
-    <div class="fieldset">
-    <h4>' . sprintf(__('Format %s'), $i) . '</h4>
+    public static function render(): void
+    {
+        if (!static::$init) {
+            return;
+        }
+        $s = dcCore::app()->blog->settings->get(My::id());
 
-    <div class="two-boxes"><h5>' . __('General') . '</h5>
+        $fac_formats = json_decode($s->get('formats'), true);
 
-    <p><label for="fac_formats_' . $uid . '_name">' .
-    __('Name:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][name]',
-            'fac_formats_' . $uid . '_name',
-        ],
-        20,
-        255,
-        empty($f['name']) ? '' : $f['name'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('In order to remove a format, leave its name empty.') .
-    '</p>
+        $i = 1;
+        foreach ($fac_formats as $uid => $format) {
+            if (empty($format['name'])) {
+                continue;
+            }
 
-    <p><label for="fac_formats_' . $uid . '_dateformat">' .
-    __('Date format:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][dateformat]',
-            'fac_formats_' . $uid . '_dateformat',
-        ],
-        20,
-        255,
-        empty($f['dateformat']) ? '' : $f['dateformat'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Use date format of Dotclear or leave empty to use default date format of blog.') .
-    '</p>
+            self::displayFacFormat(sprintf(__('Format %s'), $i), $uid, $format);
 
-    <p><label for="fac_formats_' . $uid . '_lineslimit">' .
-    __('Entries limit:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][lineslimit]',
-            'fac_formats_' . $uid . '_lineslimit',
-        ],
-        5,
-        4,
-        empty($f['lineslimit']) ? '' : $f['lineslimit'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Leave lengh empty for no limit.') .
-    '</p>
+            $i++;
+        }
 
-    </div><div class="two-boxes"><h5>' . __('Title') . '</h5>
+        $new_format = [
+            'name'                   => '',
+            'dateformat'             => '',
+            'lineslimit'             => '5',
+            'linestitletext'         => '%T',
+            'linestitleover'         => '%D',
+            'linestitlelength'       => '150',
+            'showlinesdescription'   => '0',
+            'linesdescriptionlength' => '350',
+            'linesdescriptionnohtml' => '1',
+            'showlinescontent'       => '0',
+            'linescontentlength'     => '350',
+            'linescontentnohtml'     => '1',
+        ];
 
-    <p><label for="fac_formats_' . $uid . '_linestitletext">' .
-    __('Title format:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][linestitletext]',
-            'fac_formats_' . $uid . '_linestitletext',
-        ],
-        20,
-        255,
-        empty($f['linestitletext']) ? '' : $f['linestitletext'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Format can be:') .
-    '%D : ' . __('Date') .
-    ', %T : ' . __('Title') .
-    ', %A : ' . __('Author') .
-    ', %E : ' . __('Description') .
-    ', %C : ' . __('Content') .
-    '</p>
+        self::displayFacFormat(__('New format'), uniqid(), $new_format);
 
-    <p><label for="fac_formats_' . $uid . '_linestitleover">' .
-    __('Over title format:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][linestitleover]',
-            'fac_formats_' . $uid . '_linestitleover',
-        ],
-        20,
-        255,
-        empty($f['linestitleover']) ? '' : $f['linestitleover'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Format can be:') .
-    '%D : ' . __('Date') .
-    ', %T : ' . __('Title') .
-    ', %A : ' . __('Author') .
-    ', %E : ' . __('Description') .
-    ', %C : ' . __('Content') .
-    '</p>
+        echo '
+        <div class="fieldset">
+        <h4>' . __('Informations') . '</h4>
 
-    <p><label for="fac_formats_' . $uid . '_linestitlelength">' .
-    __('Maximum length of title:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][linestitlelength]',
-            'fac_formats_' . $uid . '_linestitlelength',
-        ],
-        5,
-        4,
-        empty($f['linestitlelength']) ? '' : $f['linestitlelength'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Leave lengh empty for no limit.') .
-    '</p>
+        <div class="two-boxes">
 
-    </div><div class="two-boxes"><h5>' . __('Description') . '</h5>
+        <h5>' . __('Theme') . '</h5>
+        <p>' .
+        __('Theme must have behavoir publicEntryAfterContent.') . ' ' .
+        __('To add feed to an entry edit this entry and put in sidebar the url of the feed and select a format.') .
+        '</p>
 
-    <p><label for="fac_formats_' . $uid . '_showlinesdescription">' .
-    form::checkbox(
-        [
-            'fac_formats[' . $uid . '][showlinesdescription]',
-            'fac_formats_' . $uid . '_showlinesdescription',
-        ],
-        1,
-        !empty($f['showlinesdescription'])
-    ) .
-    __('Show description of entries') . '</label></p>
+        </div><div class="two-boxes">
 
-    <p><label for="fac_formats_' . $uid . '_linesdescriptionnohtml">' .
-    form::checkbox(
-        [
-            'fac_formats[' . $uid . '][linesdescriptionnohtml]',
-            'fac_formats_' . $uid . '_linesdescriptionnohtml',
-        ],
-        1,
-        !empty($f['linesdescriptionnohtml'])
-    ) .
-    __('Remove html of description') . '</label></p>
+        <h5>' . __('Structure') . '</h5>
+        <pre>' . Html::escapeHTML('
+            <div class="post-fac">
+            <h3>' . __('Title of feed') . '</h3>
+            <p>' . __('Description of feed') . '</p>
+            <dl>
+            <dt>' . __('Title of entry') . '</dt>
+            <dd>' . __('Description of entry') . '</dd>
+            </dl>
+            </div>
+        ') . '</pre>
 
-    <p><label for="fac_formats_' . $uid . '_linesdescriptionlength">' .
-    __('Maximum length of description:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][linesdescriptionlength]',
-            'fac_formats_' . $uid . '_linesdescriptionlength',
-        ],
-        5,
-        4,
-        empty($f['linesdescriptionlength']) ? '' : $f['linesdescriptionlength'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Leave lengh empty for no limit.') .
-    '</p>
+        </div>
 
-    </div><div class="two-boxes"><h5>' . __('Content') . '</h5>
+        </div>';
 
-    <p><label for="fac_formats_' . $uid . '_showlinescontent">' .
-    form::checkbox(
-        [
-            'fac_formats[' . $uid . '][showlinescontent]',
-            'fac_formats_' . $uid . '_showlinescontent',
-        ],
-        1,
-        !empty($f['showlinescontent'])
-    ) .
-    __('Show content of entries') . '</label></p>
+        dcPage::helpBlock('fac');
+    }
 
-    <p><label for="fac_formats_' . $uid . '_linescontentnohtml">' .
-    form::checkbox(
-        [
-            'fac_formats[' . $uid . '][linescontentnohtml]',
-            'fac_formats_' . $uid . '_linescontentnohtml',
-        ],
-        1,
-        !empty($f['linescontentnohtml'])
-    ) .
-    __('Remove html of content') . '</label></p>
-
-    <p><label for="fac_formats_' . $uid . '_linescontentlength">' .
-    __('Maximum length of content:') . '</label>' .
-    form::field(
-        [
-            'fac_formats[' . $uid . '][linescontentlength]',
-            'fac_formats_' . $uid . '_linescontentlength',
-        ],
-        5,
-        4,
-        empty($f['linescontentlength']) ? '' : $f['linescontentlength'],
-        'maximal'
-    ) . '</p>
-    <p class="form-note">' .
-    __('Leave lengh empty for no limit.') .
-    '</p>
-
-    </div>
-
-    </div>';
-
-    $i++;
+    private static function displayFacFormat(string $title, string $uid, array $format): void
+    {
+        echo
+        (new Div())->class('fieldset')->separator('')->items([
+            (new Text('h4', $title)),
+            (new Div())->class('two-boxes even')->items([
+                (new Text('h5', __('General'))),
+                // name
+                (new Para())->items([
+                    (new Label(__('Name:')))->for('fac_formats_' . $uid . '_name'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][name]',
+                        'fac_formats_' . $uid . '_name',
+                    ]))->value(empty($format['name']) ? '' : $format['name'])->size(20)->maxlenght(255)->class('maximal'),
+                ]),
+                (new Note())->text(__('In order to remove a format, leave its name empty.'))->class('form-note'),
+                // dateformat
+                (new Para())->items([
+                    (new Label(__('Date format:')))->for('fac_formats_' . $uid . '_dateformat'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][dateformat]',
+                        'fac_formats_' . $uid . '_dateformat',
+                    ]))->value(empty($format['dateformat']) ? '' : $format['dateformat'])->size(20)->maxlenght(255)->class('maximal'),
+                ]),
+                (new Note())->text(__('Use date format of Dotclear or leave empty to use default date format of blog.'))->class('form-note'),
+                // dateformat //todo: use Number
+                (new Para())->items([
+                    (new Label(__('Entries limit:')))->for('fac_formats_' . $uid . '_lineslimit'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][lineslimit]',
+                        'fac_formats_' . $uid . '_lineslimit',
+                    ]))->value(empty($format['lineslimit']) ? '' : $format['lineslimit'])->size(4)->maxlenght(5),
+                ]),
+                (new Note())->text(__('Leave lengh empty for no limit.'))->class('form-note'),
+            ]),
+            (new Div())->class('two-boxes odd')->items([
+                (new Text('h5', __('Title'))),
+                // linestitletext
+                (new Para())->items([
+                    (new Label(__('Title format:')))->for('fac_formats_' . $uid . '_linestitletext'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][linestitletext]',
+                        'fac_formats_' . $uid . '_linestitletext',
+                    ]))->value(empty($format['linestitletext']) ? '' : $format['linestitletext'])->size(20)->maxlenght(255)->class('maximal'),
+                ]),
+                (new Note())->text(
+                    __('Format can be:') .
+                    '%D : ' . __('Date') .
+                    ', %T : ' . __('Title') .
+                    ', %A : ' . __('Author') .
+                    ', %E : ' . __('Description') .
+                    ', %C : ' . __('Content')
+                )->class('form-note'),
+                // linestitleover
+                (new Para())->items([
+                    (new Label(__('Over title format:')))->for('fac_formats_' . $uid . '_linestitleover'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][linestitleover]',
+                        'fac_formats_' . $uid . '_linestitleover',
+                    ]))->value(empty($format['linestitleover']) ? '' : $format['linestitleover'])->size(20)->maxlenght(255)->class('maximal'),
+                ]),
+                (new Note())->text(
+                    __('Format can be:') .
+                    '%D : ' . __('Date') .
+                    ', %T : ' . __('Title') .
+                    ', %A : ' . __('Author') .
+                    ', %E : ' . __('Description') .
+                    ', %C : ' . __('Content')
+                )->class('form-note'),
+                // linestitlelength //todo: use Number
+                (new Para())->items([
+                    (new Label(__('Maximum length of title:')))->for('fac_formats_' . $uid . '_linestitlelength'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][linestitlelength]',
+                        'fac_formats_' . $uid . '_linestitlelength',
+                    ]))->value(empty($format['linestitlelength']) ? '' : $format['linestitlelength'])->size(4)->maxlenght(5),
+                ]),
+                (new Note())->text(__('Leave lengh empty for no limit.'))->class('form-note'),
+            ]),
+            (new Div())->class('two-boxes even')->items([
+                (new Text('h5', __('Description'))),
+                // showlinesdescription
+                (new Para())->items([
+                    (new Checkbox([
+                        'fac_formats[' . $uid . '][showlinesdescription]',
+                        'fac_formats_' . $uid . '_showlinesdescription',
+                    ], !empty($format['showlinesdescription'])))->value(1),
+                    (new Label(__('Show description of entries'), Label::OUTSIDE_LABEL_AFTER))->for('fac_formats_' . $uid . '_showlinesdescription')->class('classic'),
+                ]),
+                // linesdescriptionnohtml
+                (new Para())->items([
+                    (new Checkbox([
+                        'fac_formats[' . $uid . '][linesdescriptionnohtml]',
+                        'fac_formats_' . $uid . '_linesdescriptionnohtml',
+                    ], !empty($format['linesdescriptionnohtml'])))->value(1),
+                    (new Label(__('Remove html of description'), Label::OUTSIDE_LABEL_AFTER))->for('fac_formats_' . $uid . '_linesdescriptionnohtml')->class('classic'),
+                ]),
+                // linesdescriptionlength //todo: use Number
+                (new Para())->items([
+                    (new Label(__('Maximum length of description:')))->for('fac_formats_' . $uid . '_linesdescriptionlength'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][linesdescriptionlength]',
+                        'fac_formats_' . $uid . '_linesdescriptionlength',
+                    ]))->value(empty($format['linesdescriptionlength']) ? '' : $format['linesdescriptionlength'])->size(4)->maxlenght(5),
+                ]),
+                (new Note())->text(__('Leave lengh empty for no limit.'))->class('form-note'),
+            ]),
+            (new Div())->class('two-boxes odd')->items([
+                (new Text('h5', __('Content'))),
+                // showlinescontent
+                (new Para())->items([
+                    (new Checkbox([
+                        'fac_formats[' . $uid . '][showlinescontent]',
+                        'fac_formats_' . $uid . '_showlinescontent',
+                    ], !empty($format['showlinescontent'])))->value(1),
+                    (new Label(__('Show content of entries'), Label::OUTSIDE_LABEL_AFTER))->for('fac_formats_' . $uid . '_showlinescontent')->class('classic'),
+                ]),
+                // linescontentnohtml
+                (new Para())->items([
+                    (new Checkbox([
+                        'fac_formats[' . $uid . '][linescontentnohtml]',
+                        'fac_formats_' . $uid . '_linescontentnohtml',
+                    ], !empty($format['linescontentnohtml'])))->value(1),
+                    (new Label(__('Remove html of content'), Label::OUTSIDE_LABEL_AFTER))->for('fac_formats_' . $uid . '_linescontentnohtml')->class('classic'),
+                ]),
+                // linescontentlength //todo: use Number
+                (new Para())->items([
+                    (new Label(__('Maximum length of content:')))->for('fac_formats_' . $uid . '_linescontentlength'),
+                    (new Input([
+                        'fac_formats[' . $uid . '][linescontentlength]',
+                        'fac_formats_' . $uid . '_linescontentlength',
+                    ]))->value(empty($format['linescontentlength']) ? '' : $format['linescontentlength'])->size(4)->maxlenght(5),
+                ]),
+                (new Note())->text(__('Leave lengh empty for no limit.'))->class('form-note'),
+            ]),
+        ])->render();
+    }
 }
-
-$uid = uniqid();
-echo '
-<div class="fieldset">
-<h4>' . __('New format') . '</h4>
-
-<div class="two-boxes"><h5>' . __('General') . '</h5>
-
-<p><label for="fac_formats_' . $uid . '_name">' .
-__('Name:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][name]',
-        'fac_formats_' . $uid . '_name',
-    ],
-    20,
-    255,
-    '',
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('In order to remove a format, leave its name empty.') .
-'</p>
-
-<p><label for="fac_formats_' . $uid . '_dateformat">' .
-__('Date format:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][dateformat]',
-        'fac_formats_' . $uid . '_dateformat',
-    ],
-    20,
-    255,
-    '',
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Use date format of Dotclear or leave empty to use default date format of blog.') .
-'</p>
-
-<p><label for="fac_formats_' . $uid . '_lineslimit">' .
-__('Entries limit:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][lineslimit]',
-        'fac_formats_' . $uid . '_lineslimit',
-    ],
-    5,
-    4,
-    5,
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Leave lengh empty for no limit.') .
-'</p>
-
-</div><div class="two-boxes"><h5>' . __('Title') . '</h5>
-
-<p><label for="fac_formats_' . $uid . '_linestitletext">' .
-__('Title format:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][linestitletext]',
-        'fac_formats_' . $uid . '_linestitletext',
-    ],
-    20,
-    255,
-    '%T',
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Format can be:') .
-'%D : ' . __('Date') .
-', %T : ' . __('Title') .
-', %A : ' . __('Author') .
-', %E : ' . __('Description') .
-', %C : ' . __('Content') .
-'</p>
-
-<p><label for="fac_formats_' . $uid . '_linestitleover">' .
-__('Over title format:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][linestitleover]',
-        'fac_formats_' . $uid . '_linestitleover',
-    ],
-    20,
-    255,
-    '%D',
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Format can be:') .
-'%D : ' . __('Date') .
-', %T : ' . __('Title') .
-', %A : ' . __('Author') .
-', %E : ' . __('Description') .
-', %C : ' . __('Content') .
-'</p>
-
-<p><label for="fac_formats_' . $uid . '_linestitlelength">' .
-__('Maximum length of title:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][linestitlelength]',
-        'fac_formats_' . $uid . '_linestitlelength',
-    ],
-    5,
-    4,
-    150,
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Leave lengh empty for no limit.') .
-'</p>
-
-</div><div class="two-boxes"><h5>' . __('Description') . '</h5>
-
-<p><label for="fac_formats_' . $uid . '_showlinesdescription">' .
-form::checkbox(
-    [
-        'fac_formats[' . $uid . '][showlinesdescription]',
-        'fac_formats_' . $uid . '_showlinesdescription',
-    ],
-    1,
-    0
-) .
-__('Show description of entries') . '</label></p>
-
-<p><label for="fac_formats_' . $uid . '_linesdescriptionnohtml">' .
-form::checkbox(
-    [
-        'fac_formats[' . $uid . '][linesdescriptionnohtml]',
-        'fac_formats_' . $uid . '_linesdescriptionnohtml',
-    ],
-    1,
-    1
-) .
-__('Remove html of description') . '</label></p>
-
-<p><label for="fac_formats_' . $uid . '_linesdescriptionlength">' .
-__('Maximum length of description:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][linesdescriptionlength]',
-        'fac_formats_' . $uid . '_linesdescriptionlength',
-    ],
-    5,
-    4,
-    350,
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Leave lengh empty for no limit.') .
-'</p>
-
-</div><div class="two-boxes"><h5>' . __('Content') . '</h5>
-
-<p><label for="fac_formats_' . $uid . '_showlinescontent">' .
-form::checkbox(
-    [
-        'fac_formats[' . $uid . '][showlinescontent]',
-        'fac_formats_' . $uid . '_showlinescontent',
-    ],
-    1,
-    0
-) .
-__('Show content of entries') . '</label></p>
-
-<p><label for="fac_formats_' . $uid . '_linescontentnohtml">' .
-form::checkbox(
-    [
-        'fac_formats[' . $uid . '][linescontentnohtml]',
-        'fac_formats_' . $uid . '_linescontentnohtml',
-    ],
-    1,
-    1
-) .
-__('Remove html of content') . '</label></p>
-
-<p><label for="fac_formats_' . $uid . '_linescontentlength">' .
-__('Maximum length of content:') . '</label>' .
-form::field(
-    [
-        'fac_formats[' . $uid . '][linescontentlength]',
-        'fac_formats_' . $uid . '_linescontentlength',
-    ],
-    5,
-    4,
-    350,
-    'maximal'
-) . '</p>
-<p class="form-note">' .
-__('Leave lengh empty for no limit.') .
-'</p>
-
-</div>
-
-</div>
-
-<div class="fieldset">
-<h4>' . __('Informations') . '</h4>
-
-<div class="two-boxes">
-
-<h5>' . __('Theme') . '</h5>
-<p>' .
-__('Theme must have behavoir publicEntryAfterContent.') . ' ' .
-__('To add feed to an entry edit this entry and put in sidebar the url of the feed and select a format.') .
-'</p>
-
-</div><div class="two-boxes">
-
-<h5>' . __('Structure') . '</h5>
-<pre>' . html::escapeHTML('
-<div class="post-fac">
-<h3>' . __('Title of feed') . '</h3>
-<p>' . __('Description of feed') . '</p>
-<dl>
-<dt>' . __('Title of entry') . '</dt>
-<dd>' . __('Description of entry') . '</dd>
-</dl>
-</div>
-') . '</pre>
-
-</div>
-
-</div>';
-
-dcPage::helpBlock('fac');
diff --git a/src/Frontend.php b/src/Frontend.php
index 091b216..00af701 100644
--- a/src/Frontend.php
+++ b/src/Frontend.php
@@ -10,210 +10,234 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_RC_PATH')) {
-    return null;
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\fac;
+
+use context;
+use dcCore;
+use dcNsProcess;
+use Dotclear\Helper\Html\Html;
+use Exception;
+use dt;
+use feedReader;
+
+class Frontend extends dcNsProcess
+{
+    public static function init(): bool
+    {
+        static::$init = defined('DC_RC_PATH');
+
+        return static::$init;
+    }
+
+    public static function process(): bool
+    {
+        if (!static::$init || !dcCore::app()->blog->settings->get(My::id())->get('active')) {
+            return false;
+        }
+
+        dcCore::app()->addBehavior('publicEntryAfterContent', function (dcCore $core, context $_ctx): void {
+            # Not a post
+            if (!dcCore::app()->ctx->exists('posts')) {
+                return;
+            }
+
+            # Not in page to show
+            $types = json_decode((string) dcCore::app()->blog->settings->get(My::id())->get('public_tpltypes'), true);
+            if (!is_array($types)
+             || !in_array(dcCore::app()->url->type, $types)) {
+                return;
+            }
+
+            # Get related feed
+            $fac_url = dcCore::app()->meta->getMetadata([
+                'meta_type' => 'fac',
+                'post_id'   => dcCore::app()->ctx->__get('posts')->f('post_id'),
+                'limit'     => 1,
+            ]);
+            if ($fac_url->isEmpty()) {
+                return;
+            }
+
+            # Get related format
+            $fac_format = dcCore::app()->meta->getMetadata([
+                'meta_type' => 'facformat',
+                'post_id'   => dcCore::app()->ctx->__get('posts')->f('post_id'),
+                'limit'     => 1,
+            ]);
+            if ($fac_format->isEmpty()) {
+                return;
+            }
+
+            # Get format info
+            $default_format = [
+                'name'                   => 'default',
+                'dateformat'             => '',
+                'lineslimit'             => '5',
+                'linestitletext'         => '%T',
+                'linestitleover'         => '%D',
+                'linestitlelength'       => '150',
+                'showlinesdescription'   => '0',
+                'linesdescriptionlength' => '350',
+                'linesdescriptionnohtml' => '1',
+                'showlinescontent'       => '0',
+                'linescontentlength'     => '350',
+                'linescontentnohtml'     => '1',
+            ];
+
+            $formats = json_decode((string) dcCore::app()->blog->settings->get(My::id())->get('formats'), true);
+            if (empty($formats)
+             || !is_array($formats)
+             || !isset($formats[$fac_format->f('meta_id')])) {
+                $format = $default_format;
+            } else {
+                $format = array_merge(
+                    $default_format,
+                    $formats[$fac_format->f('meta_id')]
+                );
+            }
+
+            # Read feed url
+            $cache = is_dir(DC_TPL_CACHE . '/fac') ? DC_TPL_CACHE . '/fac' : null;
+
+            try {
+                $feed = feedReader::quickParse($fac_url->f('meta_id'), $cache);
+            } catch (Exception $e) {
+                $feed = null;
+            }
+
+            # No entries
+            if (!$feed) {
+                return;
+            }
+
+            # Feed title
+            $feedtitle = '';
+            if ('' != dcCore::app()->blog->settings->get(My::id())->get('defaultfeedtitle')) {
+                $feedtitle = '<h3>' . Html::escapeHTML(
+                    empty($feed->title) ?
+                    str_replace(
+                        '%T',
+                        __('a related feed'),
+                        dcCore::app()->blog->settings->get(My::id())->get('defaultfeedtitle')
+                    ) :
+                    str_replace(
+                        '%T',
+                        $feed->title,
+                        dcCore::app()->blog->settings->get(My::id())->get('defaultfeedtitle')
+                    )
+                ) . '</h3>';
+            }
+
+            # Feed desc
+            $feeddesc = '';
+            if (dcCore::app()->blog->settings->get(My::id())->get('showfeeddesc')
+             && '' != $feed->description) {
+                $feeddesc = '<p>' . context::global_filters(
+                    $feed->description,
+                    ['encode_xml', 'remove_html']
+                ) . '</p>';
+            }
+
+            # Date format
+            $dateformat = '' != $format['dateformat'] ?
+                $format['dateformat'] :
+                dcCore::app()->blog->settings->get('system')->get('date_format') . ',' . dcCore::app()->blog->settings->get('system')->get('time_format');
+
+            # Enrties limit
+            $entrieslimit = abs((int) $format['lineslimit']);
+            $uselimit     = $entrieslimit > 0 ? true : false;
+
+            echo
+            '<div class="post-fac">' .
+            $feedtitle . $feeddesc .
+            '<dl>';
+
+            $i = 0;
+            foreach ($feed->items as $item) {
+                # Format date
+                $date = dt::dt2str($dateformat, $item->pubdate);
+
+                # Entries title
+                $title = context::global_filters(
+                    str_replace(
+                        [
+                            '%D',
+                            '%T',
+                            '%A',
+                            '%E',
+                            '%C',
+                        ],
+                        [
+                            $date,
+                            $item->title,
+                            $item->creator,
+                            $item->description,
+                            $item->content,
+                        ],
+                        $format['linestitletext']
+                    ),
+                    ['remove_html', 'cut_string' => abs((int) $format['linestitlelength'])],
+                );
+
+                # Entries over title
+                $overtitle = context::global_filters(
+                    str_replace(
+                        [
+                            '%D',
+                            '%T',
+                            '%A',
+                            '%E',
+                            '%C',
+                        ],
+                        [
+                            $date,
+                            $item->title,
+                            $item->creator,
+                            $item->description,
+                            $item->content,
+                        ],
+                        $format['linestitleover']
+                    ),
+                    ['remove_html', 'cut_string' => 350],
+                );
+
+                # Entries description
+                $description = '';
+                if ($format['showlinesdescription']
+                 && '' != $item->description) {
+                    $description = '<dd>' .
+                    context::global_filters(
+                        $item->description,
+                        ['remove_html' => (int) $format['linesdescriptionnohtml'], 'cut_string' => abs((int) $format['linesdescriptionlength'])]
+                    ) . '</dd>';
+                }
+
+                # Entries content
+                $content = '';
+                if ($format['showlinescontent']
+                 && '' != $item->content) {
+                    $content = '<dd>' .
+                    context::global_filters(
+                        $item->content,
+                        ['remove_html' => (int) $format['linescontentnohtml'], 'cut_string' => abs((int) $format['linescontentlength'])]
+                    ) . '</dd>';
+                }
+
+                echo
+                '<dt><a href="' . $item->link . '" ' .
+                'title="' . $overtitle . '">' . $title . '</a></dt>' .
+                $description . $content;
+
+                $i++;
+                if ($uselimit && $i == $entrieslimit) {
+                    break;
+                }
+            }
+            echo '</dl></div>';
+        });
+
+        return true;
+    }
 }
-
-dcCore::app()->addBehavior('publicEntryAfterContent', function (dcCore $core, context $_ctx) {
-    dcCore::app()->blog->settings->addNamespace(basename(__DIR__));
-
-    # Not active or not a post
-    if (!dcCore::app()->blog->settings->get(basename(__DIR__))->get('active')
-     || !dcCore::app()->ctx->exists('posts')) {
-        return null;
-    }
-
-    # Not in page to show
-    $types = json_decode((string) dcCore::app()->blog->settings->get(basename(__DIR__))->get('public_tpltypes'), true);
-    if (!is_array($types)
-     || !in_array(dcCore::app()->url->type, $types)) {
-        return null;
-    }
-
-    # Get related feed
-    $fac_url = dcCore::app()->meta->getMetadata([
-        'meta_type' => 'fac',
-        'post_id'   => dcCore::app()->ctx->posts->post_id,
-        'limit'     => 1,
-    ]);
-    if ($fac_url->isEmpty()) {
-        return null;
-    }
-
-    # Get related format
-    $fac_format = dcCore::app()->meta->getMetadata([
-        'meta_type' => 'facformat',
-        'post_id'   => dcCore::app()->ctx->posts->post_id,
-        'limit'     => 1,
-    ]);
-    if ($fac_format->isEmpty()) {
-        return null;
-    }
-
-    # Get format info
-    $default_format = [
-        'name'                   => 'default',
-        'dateformat'             => '',
-        'lineslimit'             => '5',
-        'linestitletext'         => '%T',
-        'linestitleover'         => '%D',
-        'linestitlelength'       => '150',
-        'showlinesdescription'   => '0',
-        'linesdescriptionlength' => '350',
-        'linesdescriptionnohtml' => '1',
-        'showlinescontent'       => '0',
-        'linescontentlength'     => '350',
-        'linescontentnohtml'     => '1',
-    ];
-
-    $formats = json_decode((string) dcCore::app()->blog->settings->get(basename(__DIR__))->get('formats'), true);
-    if (empty($formats)
-     || !is_array($formats)
-     || !isset($formats[$fac_format->meta_id])) {
-        $format = $default_format;
-    } else {
-        $format = array_merge(
-            $default_format,
-            $formats[$fac_format->meta_id]
-        );
-    }
-
-    # Read feed url
-    $cache = is_dir(DC_TPL_CACHE . '/fac') ? DC_TPL_CACHE . '/fac' : null;
-
-    try {
-        $feed = feedReader::quickParse($fac_url->meta_id, $cache);
-    } catch (Exception $e) {
-        $feed = null;
-    }
-
-    # No entries
-    if (!$feed) {
-        return null;
-    }
-
-    # Feed title
-    $feedtitle = '';
-    if ('' != dcCore::app()->blog->settings->get(basename(__DIR__))->get('defaultfeedtitle')) {
-        $feedtitle = '<h3>' . html::escapeHTML(
-            empty($feed->title) ?
-            str_replace(
-                '%T',
-                __('a related feed'),
-                dcCore::app()->blog->settings->get(basename(__DIR__))->get('defaultfeedtitle')
-            ) :
-            str_replace(
-                '%T',
-                $feed->title,
-                dcCore::app()->blog->settings->get(basename(__DIR__))->get('defaultfeedtitle')
-            )
-        ) . '</h3>';
-    }
-
-    # Feed desc
-    $feeddesc = '';
-    if (dcCore::app()->blog->settings->get(basename(__DIR__))->get('showfeeddesc')
-     && '' != $feed->description) {
-        $feeddesc = '<p>' . context::global_filters(
-            $feed->description,
-            ['encode_xml', 'remove_html']
-        ) . '</p>';
-    }
-
-    # Date format
-    $dateformat = '' != $format['dateformat'] ?
-        $format['dateformat'] :
-        dcCore::app()->blog->settings->get('system')->get('date_format') . ',' . dcCore::app()->blog->settings->get('system')->get('time_format');
-
-    # Enrties limit
-    $entrieslimit = abs((int) $format['lineslimit']);
-    $uselimit     = $entrieslimit > 0 ? true : false;
-
-    echo
-    '<div class="post-fac">' .
-    $feedtitle . $feeddesc .
-    '<dl>';
-
-    $i = 0;
-    foreach ($feed->items as $item) {
-        # Format date
-        $date = dt::dt2str($dateformat, $item->pubdate);
-
-        # Entries title
-        $title = context::global_filters(
-            str_replace(
-                [
-                    '%D',
-                    '%T',
-                    '%A',
-                    '%E',
-                    '%C',
-                ],
-                [
-                    $date,
-                    $item->title,
-                    $item->creator,
-                    $item->description,
-                    $item->content,
-                ],
-                $format['linestitletext']
-            ),
-            ['remove_html', 'cut_string' => abs((int) $format['linestitlelength'])],
-        );
-
-        # Entries over title
-        $overtitle = context::global_filters(
-            str_replace(
-                [
-                    '%D',
-                    '%T',
-                    '%A',
-                    '%E',
-                    '%C',
-                ],
-                [
-                    $date,
-                    $item->title,
-                    $item->creator,
-                    $item->description,
-                    $item->content,
-                ],
-                $format['linestitleover']
-            ),
-            ['remove_html', 'cut_string' => 350],
-        );
-
-        # Entries description
-        $description = '';
-        if ($format['showlinesdescription']
-         && '' != $item->description) {
-            $description = '<dd>' .
-            context::global_filters(
-                $item->description,
-                ['remove_html' => (int) $format['linesdescriptionnohtml'], 'cut_string' => abs((int) $format['linesdescriptionlength'])]
-            ) . '</dd>';
-        }
-
-        # Entries content
-        $content = '';
-        if ($format['showlinescontent']
-         && '' != $item->content) {
-            $content = '<dd>' .
-            context::global_filters(
-                $item->content,
-                ['remove_html' => (int) $format['linescontentnohtml'], 'cut_string' => abs((int) $format['linescontentlength'])]
-            ) . '</dd>';
-        }
-
-        echo
-        '<dt><a href="' . $item->link . '" ' .
-        'title="' . $overtitle . '">' . $title . '</a></dt>' .
-        $description . $content;
-
-        $i++;
-        if ($uselimit && $i == $entrieslimit) {
-            break;
-        }
-    }
-    echo '</dl></div>';
-});
diff --git a/src/Install.php b/src/Install.php
index 74fe4ba..fa2ff15 100644
--- a/src/Install.php
+++ b/src/Install.php
@@ -10,124 +10,141 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_CONTEXT_ADMIN')) {
-    return null;
-}
+declare(strict_types=1);
 
-// Module specs
-$mod_conf = [
-    [
-        'active',
-        'Enabled fac plugin',
-        false,
-        'boolean',
-    ],
-    [
-        'public_tpltypes',
-        'List of templates types which used fac',
-        json_encode(['post', 'tag', 'archive']),
-        'string',
-    ],
-    [
-        'formats',
-        'Formats of feeds contents',
-        json_encode([
-            uniqid() => [
-                'name'                   => 'default',
-                'dateformat'             => '',
-                'lineslimit'             => '5',
-                'linestitletext'         => '%T',
-                'linestitleover'         => '%D',
-                'linestitlelength'       => '150',
-                'showlinesdescription'   => '0',
-                'linesdescriptionlength' => '350',
-                'linesdescriptionnohtml' => '1',
-                'showlinescontent'       => '0',
-                'linescontentlength'     => '350',
-                'linescontentnohtml'     => '1',
-            ],
-            uniqid() => [
-                'name'                   => 'full',
-                'dateformat'             => '',
-                'lineslimit'             => '20',
-                'linestitletext'         => '%T',
-                'linestitleover'         => '%D - %E',
-                'linestitlelength'       => '',
-                'showlinesdescription'   => '1',
-                'linesdescriptionlength' => '',
-                'linesdescriptionnohtml' => '1',
-                'showlinescontent'       => '1',
-                'linescontentlength'     => '',
-                'linescontentnohtml'     => '1',
-            ],
-        ]),
-        'string',
-        false,
-        true,
-    ],
-    [
-        'defaultfeedtitle',
-        'Default title of feed',
-        '%T',
-        'string',
-    ],
-    [
-        'showfeeddesc',
-        'Show description of feed',
-        1,
-        'boolean',
-    ],
-];
+namespace Dotclear\Plugin\fac;
 
-// Nothing to change below
-try {
-    // Check module version
-    if (!dcCore::app()->newVersion(
-        basename(__DIR__),
-        dcCore::app()->plugins->moduleInfo(basename(__DIR__), 'version')
-    )) {
-        return null;
+use dcCore;
+use dcNamespace;
+use dcNsProcess;
+use Exception;
+
+class Install extends dcNsProcess
+{
+    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;
     }
 
-    // version < 1.0 : upgrade settings id and ns and array
-    $current = dcCore::app()->getVersion(basename(__DIR__));
-    if ($current && version_compare($current, '1.0', '<')) {
-        $record = dcCore::app()->con->select(
-            'SELECT * FROM ' . dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME . ' ' .
-            "WHERE setting_ns = 'fac' "
-        );
-        while ($record->fetch()) {
-            if (preg_match('/^fac_(.*?)$/', $record->setting_id, $match)) {
-                $cur = dcCore::app()->con->openCursor(dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME);
-                if (in_array($record->setting_id, ['fac_public_tpltypes', 'fac_formats'])) {
-                    $cur->setting_value = json_encode(@unserialize($record->setting_value));
-                }
-                $cur->setting_id = $match[1];
-                $cur->setting_ns = basename(__DIR__);
-                $cur->update(
-                    "WHERE setting_id = '" . $record->setting_id . "' and setting_ns = 'fac' " .
-                    'AND blog_id ' . (null === $record->blog_id ? 'IS NULL ' : ("= '" . dcCore::app()->con->escape($record->blog_id) . "' "))
+    public static function process(): bool
+    {
+        if (!static::$init) {
+            return false;
+        }
+
+        // Module specs
+        $mod_conf = [
+            [
+                'active',
+                'Enabled fac plugin',
+                false,
+                'boolean',
+            ],
+            [
+                'public_tpltypes',
+                'List of templates types which used fac',
+                json_encode(['post', 'tag', 'archive']),
+                'string',
+            ],
+            [
+                'formats',
+                'Formats of feeds contents',
+                json_encode([
+                    uniqid() => [
+                        'name'                   => 'default',
+                        'dateformat'             => '',
+                        'lineslimit'             => '5',
+                        'linestitletext'         => '%T',
+                        'linestitleover'         => '%D',
+                        'linestitlelength'       => '150',
+                        'showlinesdescription'   => '0',
+                        'linesdescriptionlength' => '350',
+                        'linesdescriptionnohtml' => '1',
+                        'showlinescontent'       => '0',
+                        'linescontentlength'     => '350',
+                        'linescontentnohtml'     => '1',
+                    ],
+                    uniqid() => [
+                        'name'                   => 'full',
+                        'dateformat'             => '',
+                        'lineslimit'             => '20',
+                        'linestitletext'         => '%T',
+                        'linestitleover'         => '%D - %E',
+                        'linestitlelength'       => '',
+                        'showlinesdescription'   => '1',
+                        'linesdescriptionlength' => '',
+                        'linesdescriptionnohtml' => '1',
+                        'showlinescontent'       => '1',
+                        'linescontentlength'     => '',
+                        'linescontentnohtml'     => '1',
+                    ],
+                ]),
+                'string',
+                false,
+                true,
+            ],
+            [
+                'defaultfeedtitle',
+                'Default title of feed',
+                '%T',
+                'string',
+            ],
+            [
+                'showfeeddesc',
+                'Show description of feed',
+                1,
+                'boolean',
+            ],
+        ];
+
+        // Nothing to change below
+        try {
+            self::growUp();
+
+            // Set module settings
+            foreach ($mod_conf as $v) {
+                dcCore::app()->blog->settings->get(My::id())->put(
+                    $v[0],
+                    $v[2],
+                    $v[3],
+                    $v[1],
+                    false,
+                    true
                 );
             }
+        } catch (Exception $e) {
+            dcCore::app()->error->add($e->getMessage());
+        }
+
+        return true;
+    }
+
+    private static function growUp(): void
+    {
+        // version < 1.0 : upgrade settings id and ns and array
+        $current = dcCore::app()->getVersion(My::id());
+        if ($current && version_compare($current, '1.0', '<')) {
+            $record = dcCore::app()->con->select(
+                'SELECT * FROM ' . dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME . ' ' .
+                "WHERE setting_ns = 'fac' "
+            );
+            while ($record->fetch()) {
+                if (preg_match('/^fac_(.*?)$/', $record->f('setting_id'), $match)) {
+                    $cur = dcCore::app()->con->openCursor(dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME);
+                    if (in_array($record->f('setting_id'), ['fac_public_tpltypes', 'fac_formats'])) {
+                        $cur->setField('setting_value', json_encode(@unserialize($record->f('setting_value'))));
+                    }
+                    $cur->setField('setting_id', $match[1]);
+                    $cur->SetField('setting_ns', My::id());
+                    $cur->update(
+                        "WHERE setting_id = '" . $record->f('setting_id') . "' and setting_ns = 'fac' " .
+                        'AND blog_id ' . (null === $record->f('blog_id') ? 'IS NULL ' : ("= '" . dcCore::app()->con->escapeStr($record->f('blog_id')) . "' "))
+                    );
+                }
+            }
         }
     }
-
-    // Set module settings
-    dcCore::app()->blog->settings->addNamespace(basename(__DIR__));
-    foreach ($mod_conf as $v) {
-        dcCore::app()->blog->settings->get(basename(__DIR__))->put(
-            $v[0],
-            $v[2],
-            $v[3],
-            $v[1],
-            false,
-            true
-        );
-    }
-
-    return true;
-} catch (Exception $e) {
-    dcCore::app()->error->add($e->getMessage());
-
-    return false;
 }
diff --git a/src/My.php b/src/My.php
new file mode 100644
index 0000000..72981fb
--- /dev/null
+++ b/src/My.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * @brief fac, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis and Contributors
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\fac;
+
+use dcCore;
+
+class My
+{
+    /**
+     * This module id
+     */
+    public static function id(): string
+    {
+        return basename(dirname(__DIR__));
+    }
+
+    /**
+     * This module name
+     */
+    public static function name(): string
+    {
+        return __((string) dcCore::app()->plugins->moduleInfo(self::id(), 'name'));
+    }
+}