diff --git a/README.md b/README.md
index 010dbdd..4701406 100644
--- a/README.md
+++ b/README.md
@@ -15,13 +15,19 @@ and they will be publish ones after the others every week.
 
   * admin permissions to configure plugin
   * usage,contentadmin permissions to link feeds
-  * Dotclear 2.6
+  * Dotclear 2.19
+
+## NOTICE
+
+This plugin creates a new table on Dotclear database !
 
 ## USAGE
 
 First install periodical, manualy from a zip package or from 
 Dotaddict repository. (See Dotclear's documentation to know how do this)
 
+Main settings are accessible from blog preference page.
+
 When enabled you have a menu in main sidebar menu called "Periodical" 
 under "Plugins" group, follow it to manage periods.
 
diff --git a/_define.php b/_define.php
index 687fdaa..38b6480 100644
--- a/_define.php
+++ b/_define.php
@@ -19,7 +19,7 @@ $this->registerModule(
     'Periodical',
     'Published periodically entries',
     'Jean-Christian Denis and contributors',
-    '2021.08.20',
+    '2021.08.23',
     [
         'permissions' => 'usage,contentadmin',
         'type' => 'plugin',
diff --git a/locales/fr/main.lang.php b/locales/fr/main.lang.php
index f5e84d7..89c0cc5 100644
--- a/locales/fr/main.lang.php
+++ b/locales/fr/main.lang.php
@@ -1,179 +1,184 @@
 <?php
 // Language: Français 
-// Module: periodical - 2013.11.11
-// Date: 2013-11-12 08:11:54 
-// Translated with dcTranslater - 2013.05.11 
+// Module: periodical - 2021.08.23
+// Date: 2021-08-23 23:40:28 
+// Translated with dcTranslater - 2021.08.18 
 
-#_admin.php:25
-#_admin.php:84
-#_admin.php:142
-#_admin.php:155
-#_admin.php:311
-#index.php:456
-#index.php:468
-#index.php:519
-#index.php:738
-#index.php:764
+#_admin.php:32
+#_admin.php:109
+#_admin.php:158
+#_admin.php:215
+#_admin.php:223
+#_admin.php:374
+#index.php:437
+#index.php:449
+#index.php:500
+#index.php:714
+#index.php:740
 $GLOBALS['__l10n']['Periodical'] = 'Publications périodiques';
 
-#_admin.php:143
-$GLOBALS['__l10n']['Add to periodical'] = 'Ajouter aux publications périodiques';
-
-#_admin.php:156
-#index.php:519
-$GLOBALS['__l10n']['Remove from periodical'] = 'Retirer des publications périodiques';
-
-#_admin.php:188
-$GLOBALS['__l10n']['Posts have been removed from periodical.'] = 'Billets retirés des publications périodiques.';
-
-#_admin.php:216
-$GLOBALS['__l10n']['Posts have been added to periodical.'] = 'Billets ajoutés aux publications périodiques.';
-
-#_admin.php:226
-$GLOBALS['__l10n']['Add a period to this selection'] = 'Ajouter une période à cette liste';
-
-#_config.php:25
-#inc/lib.index.pager.php:120
+#_admin.php:91
+#inc/lib.index.pager.php:117
 $GLOBALS['__l10n']['Create date'] = 'Date de création';
 
-#_config.php:64
-$GLOBALS['__l10n']['Configuration has been successfully updated.'] = 'La configuration a été mise à jour avec succés.';
-
-#_config.php:84
+#_admin.php:115
 $GLOBALS['__l10n']['Enable plugin'] = 'Activer le plugin';
 
-#_config.php:89
+#_admin.php:116
 $GLOBALS['__l10n']['Dates of published entries'] = 'Dates de billets publiés';
 
-#_config.php:93
+#_admin.php:119
 $GLOBALS['__l10n']['Update post date'] = 'Mettre à jour la date du billet';
 
-#_config.php:97
+#_admin.php:122
 $GLOBALS['__l10n']['Update post url'] = 'Mettre à jour l\'URL du billet';
 
-#_config.php:102
+#_admin.php:125
 $GLOBALS['__l10n']['Order of publication of entries'] = 'Ordre de publication des billets';
 
-#inc/class.periodical.php:318
-$GLOBALS['__l10n']['Hourly'] = 'Toutes les heures';
+#_admin.php:215
+$GLOBALS['__l10n']['Add to periodical'] = 'Ajouter aux publications périodiques';
 
-#inc/class.periodical.php:319
-$GLOBALS['__l10n']['twice a day'] = 'Deux fois par jour';
+#_admin.php:223
+#index.php:500
+$GLOBALS['__l10n']['Remove from periodical'] = 'Retirer des publications périodiques';
+
+#_admin.php:253
+$GLOBALS['__l10n']['Posts have been removed from periodical.'] = 'Billets retirés des publications périodiques.';
+
+#_admin.php:281
+$GLOBALS['__l10n']['Posts have been added to periodical.'] = 'Billets ajoutés aux publications périodiques.';
+
+#_admin.php:291
+$GLOBALS['__l10n']['Add a period to this selection'] = 'Ajouter une période à cette liste';
 
 #inc/class.periodical.php:320
-$GLOBALS['__l10n']['Daily'] = 'Une fois par jour';
+$GLOBALS['__l10n']['Hourly'] = 'Toutes les heures';
 
 #inc/class.periodical.php:321
-$GLOBALS['__l10n']['Weekly'] = 'Une fois par semaine';
+$GLOBALS['__l10n']['twice a day'] = 'Deux fois par jour';
 
 #inc/class.periodical.php:322
+$GLOBALS['__l10n']['Daily'] = 'Une fois par jour';
+
+#inc/class.periodical.php:323
+$GLOBALS['__l10n']['Weekly'] = 'Une fois par semaine';
+
+#inc/class.periodical.php:324
 $GLOBALS['__l10n']['Monthly'] = 'Un fois par mois';
 
-#inc/class.periodical.php:354
-#inc/lib.index.pager.php:84
+#inc/class.periodical.php:356
+#inc/lib.index.pager.php:81
 $GLOBALS['__l10n']['Unknow frequence'] = 'Fréquence inconnue';
 
-#inc/lib.index.pager.php:31
+#inc/lib.index.pager.php:29
 $GLOBALS['__l10n']['No period'] = 'Pas de période';
 
-#inc/lib.index.pager.php:44
-#index.php:684
+#inc/lib.index.pager.php:41
+#index.php:661
 $GLOBALS['__l10n']['Next update'] = 'Prochaine mise à jour';
 
-#inc/lib.index.pager.php:46
+#inc/lib.index.pager.php:43
 $GLOBALS['__l10n']['Publications'] = 'Publications';
 
-#inc/lib.index.pager.php:48
-#index.php:685
+#inc/lib.index.pager.php:45
+#index.php:662
 $GLOBALS['__l10n']['End date'] = 'Date de fin';
 
-#inc/lib.index.pager.php:81
+#inc/lib.index.pager.php:78
 $GLOBALS['__l10n']['view related entries'] = 'voir les billets liés';
 
-#inc/lib.index.pager.php:89
+#inc/lib.index.pager.php:87
 $GLOBALS['__l10n']['edit period'] = 'modifier la période';
 
-#inc/lib.periodical.socialmewriter.php:23
-$GLOBALS['__l10n']['New periodical publication'] = 'Nouvelle publication périodique';
+#inc/lib.index.pager.php:182
+$GLOBALS['__l10n']['protected'] = 'protégé';
+
+#inc/lib.index.pager.php:187
+$GLOBALS['__l10n']['selected'] = 'sélectionné';
 
 #inc/lib.periodical.socialmewriter.php:24
+$GLOBALS['__l10n']['New periodical publication'] = 'Nouvelle publication périodique';
+
+#inc/lib.periodical.socialmewriter.php:25
 $GLOBALS['__l10n']['When an entry is published on a period'] = 'Lorsque qu\'un billet st marqué comme publié par une période';
 
-#index.php:43
+#index.php:41
 $GLOBALS['__l10n']['One post per day'] = 'Un billet par jour';
 
-#index.php:55
+#index.php:53
 $GLOBALS['__l10n']['This period does not exist.'] = 'Cette période n\'existe pas.';
 
-#index.php:99
+#index.php:95
 $GLOBALS['__l10n']['Period title is already taken'] = 'Le titre de la période est déjà pris';
 
-#index.php:104
+#index.php:100
 $GLOBALS['__l10n']['Period title is required'] = 'Le titre de la période est requis';
 
-#index.php:107
+#index.php:103
 $GLOBALS['__l10n']['Start date must be older than end date'] = 'La date de début doit être plus ancienne que la date de fin';
 
-#index.php:126
+#index.php:122
 $GLOBALS['__l10n']['Period successfully updated.'] = 'Période mise à jour.';
 
-#index.php:135
+#index.php:130
 $GLOBALS['__l10n']['Period successfully created.'] = 'Période crée.';
 
-#index.php:159
+#index.php:154
 $GLOBALS['__l10n']['Entries successfully published.'] = 'Billets publiés.';
 
-#index.php:182
+#index.php:176
 $GLOBALS['__l10n']['Entries successfully unpublished.'] = 'Billets mis hors ligne.';
 
-#index.php:204
+#index.php:197
 $GLOBALS['__l10n']['Entries successfully removed.'] = 'Billets retirés.';
 
-#index.php:469
-#index.php:477
-#index.php:770
+#index.php:450
+#index.php:458
+#index.php:746
 $GLOBALS['__l10n']['New period'] = 'Nouvelle période';
 
-#index.php:469
-#index.php:477
+#index.php:450
+#index.php:458
 $GLOBALS['__l10n']['Edit period'] = 'Modifier la période';
 
-#index.php:486
+#index.php:467
 $GLOBALS['__l10n']['Next update:'] = 'Prochaine mise à jour :';
 
-#index.php:489
+#index.php:470
 $GLOBALS['__l10n']['End date:'] = 'Date de fin :';
 
-#index.php:494
+#index.php:475
 $GLOBALS['__l10n']['Publication frequency:'] = 'Fréquence de publication :';
 
-#index.php:497
+#index.php:478
 $GLOBALS['__l10n']['Number of entries to publish every time:'] = 'Nombre de billets à publier à chaque fois :';
 
-#index.php:539
+#index.php:520
 $GLOBALS['__l10n']['Entries linked to this period'] = 'Billets liés à cette période';
 
-#index.php:648
+#index.php:627
 $GLOBALS['__l10n']['Periods removed.'] = 'Périodes retirées.';
 
-#index.php:669
+#index.php:647
 $GLOBALS['__l10n']['Periods emptied.'] = 'Périodes vidées.';
 
-#index.php:686
+#index.php:663
 $GLOBALS['__l10n']['Frequence'] = 'Fréquence';
 
-#index.php:695
+#index.php:672
 $GLOBALS['__l10n']['empty periods'] = 'vider les périodes';
 
-#index.php:696
+#index.php:673
 $GLOBALS['__l10n']['delete periods'] = 'effacer les périodes';
 
-#index.php:794
+#index.php:770
 $GLOBALS['__l10n']['Results per page :'] = 'Résultats par page :';
 
-#index.php:818
+#index.php:794
 $GLOBALS['__l10n']['Selected periods action:'] = 'Action sur les périodes selectionnées :';
 
+$GLOBALS['__l10n']['Configuration has been successfully updated.'] = 'La configuration a été mise à jour avec succés.';
+
 $GLOBALS['__l10n']['Published periodically entries'] = 'Publier périodiquement des billets';
 
-?>
\ No newline at end of file
diff --git a/locales/fr/main.po b/locales/fr/main.po
index 52ea9dc..516cfb3 100644
--- a/locales/fr/main.po
+++ b/locales/fr/main.po
@@ -1,240 +1,249 @@
 # Language: Français
-# Module: periodical - 2013.11.11
-# Date: 2013-11-12 08:11:55
-# Translated with translater 2013.05.11
+# Module: periodical - 2021.08.23
+# Date: 2021-08-23 23:40:28
+# Translated with translater 2021.08.18
 
 msgid ""
 msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
-"Project-Id-Version: periodical 2013.11.11\n"
+"Project-Id-Version: periodical 2021.08.23\n"
 "POT-Creation-Date: \n"
-"PO-Revision-Date: 2013-11-12T08:11:55+00:00\n"
+"PO-Revision-Date: 2021-08-23T23:40:28+00:00\n"
 "Last-Translator: Jean-Christian Denis\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
 "Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
 
-#: _admin.php:25
-#: _admin.php:84
-#: _admin.php:142
-#: _admin.php:155
-#: _admin.php:311
-#: index.php:456
-#: index.php:468
-#: index.php:519
-#: index.php:738
-#: index.php:764
+#: _admin.php:32
+#: _admin.php:109
+#: _admin.php:158
+#: _admin.php:215
+#: _admin.php:223
+#: _admin.php:374
+#: index.php:437
+#: index.php:449
+#: index.php:500
+#: index.php:714
+#: index.php:740
 msgid "Periodical"
 msgstr "Publications périodiques"
 
-#: _admin.php:143
-msgid "Add to periodical"
-msgstr "Ajouter aux publications périodiques"
-
-#: _admin.php:156
-#: index.php:519
-msgid "Remove from periodical"
-msgstr "Retirer des publications périodiques"
-
-#: _admin.php:188
-msgid "Posts have been removed from periodical."
-msgstr "Billets retirés des publications périodiques."
-
-#: _admin.php:216
-msgid "Posts have been added to periodical."
-msgstr "Billets ajoutés aux publications périodiques."
-
-#: _admin.php:226
-msgid "Add a period to this selection"
-msgstr "Ajouter une période à cette liste"
-
-#: _config.php:25
-#: inc/lib.index.pager.php:120
+#: _admin.php:91
+#: inc/lib.index.pager.php:117
 msgid "Create date"
 msgstr "Date de création"
 
-#: _config.php:64
-msgid "Configuration has been successfully updated."
-msgstr "La configuration a été mise à jour avec succés."
-
-#: _config.php:84
+#: _admin.php:115
 msgid "Enable plugin"
 msgstr "Activer le plugin"
 
-#: _config.php:89
+#: _admin.php:116
 msgid "Dates of published entries"
 msgstr "Dates de billets publiés"
 
-#: _config.php:93
+#: _admin.php:119
 msgid "Update post date"
 msgstr "Mettre à jour la date du billet"
 
-#: _config.php:97
+#: _admin.php:122
 msgid "Update post url"
 msgstr "Mettre à jour l'URL du billet"
 
-#: _config.php:102
+#: _admin.php:125
 msgid "Order of publication of entries"
 msgstr "Ordre de publication des billets"
 
-#: inc/class.periodical.php:318
+#: _admin.php:215
+msgid "Add to periodical"
+msgstr "Ajouter aux publications périodiques"
+
+#: _admin.php:223
+#: index.php:500
+msgid "Remove from periodical"
+msgstr "Retirer des publications périodiques"
+
+#: _admin.php:253
+msgid "Posts have been removed from periodical."
+msgstr "Billets retirés des publications périodiques."
+
+#: _admin.php:281
+msgid "Posts have been added to periodical."
+msgstr "Billets ajoutés aux publications périodiques."
+
+#: _admin.php:291
+msgid "Add a period to this selection"
+msgstr "Ajouter une période à cette liste"
+
+#: inc/class.periodical.php:320
 msgid "Hourly"
 msgstr "Toutes les heures"
 
-#: inc/class.periodical.php:319
+#: inc/class.periodical.php:321
 msgid "twice a day"
 msgstr "Deux fois par jour"
 
-#: inc/class.periodical.php:320
+#: inc/class.periodical.php:322
 msgid "Daily"
 msgstr "Une fois par jour"
 
-#: inc/class.periodical.php:321
+#: inc/class.periodical.php:323
 msgid "Weekly"
 msgstr "Une fois par semaine"
 
-#: inc/class.periodical.php:322
+#: inc/class.periodical.php:324
 msgid "Monthly"
 msgstr "Un fois par mois"
 
-#: inc/class.periodical.php:354
-#: inc/lib.index.pager.php:84
+#: inc/class.periodical.php:356
+#: inc/lib.index.pager.php:81
 msgid "Unknow frequence"
 msgstr "Fréquence inconnue"
 
-#: inc/lib.index.pager.php:31
+#: inc/lib.index.pager.php:29
 msgid "No period"
 msgstr "Pas de période"
 
-#: inc/lib.index.pager.php:44
-#: index.php:684
+#: inc/lib.index.pager.php:41
+#: index.php:661
 msgid "Next update"
 msgstr "Prochaine mise à jour"
 
-#: inc/lib.index.pager.php:46
+#: inc/lib.index.pager.php:43
 msgid "Publications"
 msgstr "Publications"
 
-#: inc/lib.index.pager.php:48
-#: index.php:685
+#: inc/lib.index.pager.php:45
+#: index.php:662
 msgid "End date"
 msgstr "Date de fin"
 
-#: inc/lib.index.pager.php:81
+#: inc/lib.index.pager.php:78
 msgid "view related entries"
 msgstr "voir les billets liés"
 
-#: inc/lib.index.pager.php:89
+#: inc/lib.index.pager.php:87
 msgid "edit period"
 msgstr "modifier la période"
 
-#: inc/lib.periodical.socialmewriter.php:23
+#: inc/lib.index.pager.php:182
+msgid "protected"
+msgstr "protégé"
+
+#: inc/lib.index.pager.php:187
+msgid "selected"
+msgstr "sélectionné"
+
+#: inc/lib.periodical.socialmewriter.php:24
 msgid "New periodical publication"
 msgstr "Nouvelle publication périodique"
 
-#: inc/lib.periodical.socialmewriter.php:24
+#: inc/lib.periodical.socialmewriter.php:25
 msgid "When an entry is published on a period"
 msgstr "Lorsque qu'un billet st marqué comme publié par une période"
 
-#: index.php:43
+#: index.php:41
 msgid "One post per day"
 msgstr "Un billet par jour"
 
-#: index.php:55
+#: index.php:53
 msgid "This period does not exist."
 msgstr "Cette période n'existe pas."
 
-#: index.php:99
+#: index.php:95
 msgid "Period title is already taken"
 msgstr "Le titre de la période est déjà pris"
 
-#: index.php:104
+#: index.php:100
 msgid "Period title is required"
 msgstr "Le titre de la période est requis"
 
-#: index.php:107
+#: index.php:103
 msgid "Start date must be older than end date"
 msgstr "La date de début doit être plus ancienne que la date de fin"
 
-#: index.php:126
+#: index.php:122
 msgid "Period successfully updated."
 msgstr "Période mise à jour."
 
-#: index.php:135
+#: index.php:130
 msgid "Period successfully created."
 msgstr "Période crée."
 
-#: index.php:159
+#: index.php:154
 msgid "Entries successfully published."
 msgstr "Billets publiés."
 
-#: index.php:182
+#: index.php:176
 msgid "Entries successfully unpublished."
 msgstr "Billets mis hors ligne."
 
-#: index.php:204
+#: index.php:197
 msgid "Entries successfully removed."
 msgstr "Billets retirés."
 
-#: index.php:469
-#: index.php:477
-#: index.php:770
+#: index.php:450
+#: index.php:458
+#: index.php:746
 msgid "New period"
 msgstr "Nouvelle période"
 
-#: index.php:469
-#: index.php:477
+#: index.php:450
+#: index.php:458
 msgid "Edit period"
 msgstr "Modifier la période"
 
-#: index.php:486
+#: index.php:467
 msgid "Next update:"
 msgstr "Prochaine mise à jour :"
 
-#: index.php:489
+#: index.php:470
 msgid "End date:"
 msgstr "Date de fin :"
 
-#: index.php:494
+#: index.php:475
 msgid "Publication frequency:"
 msgstr "Fréquence de publication :"
 
-#: index.php:497
+#: index.php:478
 msgid "Number of entries to publish every time:"
 msgstr "Nombre de billets à publier à chaque fois :"
 
-#: index.php:539
+#: index.php:520
 msgid "Entries linked to this period"
 msgstr "Billets liés à cette période"
 
-#: index.php:648
+#: index.php:627
 msgid "Periods removed."
 msgstr "Périodes retirées."
 
-#: index.php:669
+#: index.php:647
 msgid "Periods emptied."
 msgstr "Périodes vidées."
 
-#: index.php:686
+#: index.php:663
 msgid "Frequence"
 msgstr "Fréquence"
 
-#: index.php:695
+#: index.php:672
 msgid "empty periods"
 msgstr "vider les périodes"
 
-#: index.php:696
+#: index.php:673
 msgid "delete periods"
 msgstr "effacer les périodes"
 
-#: index.php:794
+#: index.php:770
 msgid "Results per page :"
 msgstr "Résultats par page :"
 
-#: index.php:818
+#: index.php:794
 msgid "Selected periods action:"
 msgstr "Action sur les périodes selectionnées :"
 
+msgid "Configuration has been successfully updated."
+msgstr "La configuration a été mise à jour avec succés."
+
 msgid "Published periodically entries"
 msgstr "Publier périodiquement des billets"