diff --git a/locale/fr_FR/LC_MESSAGES/messages.mo b/locale/fr_FR/LC_MESSAGES/messages.mo
index 128af047..642fa246 100644
Binary files a/locale/fr_FR/LC_MESSAGES/messages.mo and b/locale/fr_FR/LC_MESSAGES/messages.mo differ
diff --git a/locale/fr_FR/LC_MESSAGES/messages.po b/locale/fr_FR/LC_MESSAGES/messages.po
index cf5461c0..c75ea812 100644
--- a/locale/fr_FR/LC_MESSAGES/messages.po
+++ b/locale/fr_FR/LC_MESSAGES/messages.po
@@ -1,14 +1,14 @@
-# translation of messages.po to Français
-# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
-# This file is distributed under the same license as the PACKAGE package.
-#
-# Thibaut Cousin <informatique@thibaut-cousin.net>, 2007.
+# translation of messages.po to Français
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# 
+# Thibaut Cousin <informatique@thibaut-cousin.net>, 2007.
 msgid ""
 msgstr ""
 "Project-Id-Version: messages\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2007-08-21 14:15+0400\n"
-"PO-Revision-Date: 2007-08-20 23:36+0200\n"
+"POT-Creation-Date: 2007-08-21 18:31+0400\n"
+"PO-Revision-Date: 2007-08-21 12:37+0200\n"
 "Last-Translator: Thibaut Cousin <informatique@thibaut-cousin.net>\n"
 "Language-Team: Français <fr@li.org>\n"
 "MIME-Version: 1.0\n"
@@ -570,12 +570,12 @@ msgstr "Se désinscrire de %s ?"
 #: localized_js.php:112
 #, php-format
 msgid "Mark all visible articles in %s as read?"
-msgstr "Marquer tous les articles de %s visibles comme lus ?"
+msgstr "Marquer tous les articles visibles de %s comme lus ?"
 
 #: localized_js.php:113
 #, php-format
 msgid "Mark all selected articles in %s as read?"
-msgstr "Marquer tous les flux sélectionnés dans %s comme lus ?"
+msgstr "Marquer tous les articles sélectionnés de %s comme lus ?"
 
 #: localized_js.php:114
 msgid "Please enter label title:"
@@ -696,22 +696,28 @@ msgid "Default article limit"
 msgstr "Nombre maximal d'articles par défaut"
 
 #: localized_schema.php:37
+msgid ""
+"Default limit for articles to display, any custom number you like (0 - "
+"disables)."
+msgstr ""
+
+#: localized_schema.php:38
 msgid "Enable feed categories"
 msgstr "Utiliser les catégories de flux"
 
-#: localized_schema.php:38
-msgid "Enable search toolbar"
-msgstr ""
-
 #: localized_schema.php:39
+msgid "Enable search toolbar"
+msgstr "Activer la barre de recherche"
+
+#: localized_schema.php:40
 msgid "Hide feeds with no unread messages"
 msgstr "Masquer les flux sans article non lu"
 
-#: localized_schema.php:40
+#: localized_schema.php:41
 msgid "Mark articles as read automatically"
 msgstr "Marquer les articles comme lus automatiquement"
 
-#: localized_schema.php:41
+#: localized_schema.php:42
 msgid ""
 "This option enables marking articles as read automatically in combined mode "
 "while you scroll article list."
@@ -719,53 +725,53 @@ msgstr ""
 "Cette option active le marquage automatique des articles comme lus en "
 "affichage combiné, pendant que vous faites défiler la liste des articles"
 
-#: localized_schema.php:42
+#: localized_schema.php:43
 msgid "On catchup show next feed"
 msgstr "Sauter automatiquement au flux suivant"
 
-#: localized_schema.php:43
+#: localized_schema.php:44
 msgid ""
 "When \"Mark as read\" button is clicked in toolbar, automatically open next "
 "feed with unread articles."
 msgstr ""
-"Lorsque vous cliquez sur «&nbsp;Marquer comme lu&nbsp;», le prochain flux "
+"Lorsque vous cliquez sur «&nbsp;Marquer comme lus&nbsp;», le prochain flux "
 "contenant des articles non lus est automatiquement affiché"
 
-#: localized_schema.php:44
+#: localized_schema.php:45
 msgid "Open article links in new browser window"
 msgstr "Ouvrir les liens des articles dans une nouvelle fenêtre"
 
-#: localized_schema.php:45
+#: localized_schema.php:46
 msgid "Reverse headline order (oldest first)"
 msgstr "Inverser l'order des en-têtes (les plus anciens en premier)"
 
-#: localized_schema.php:46
+#: localized_schema.php:47
 msgid "Show content preview in headlines list"
 msgstr "Donner un aperçu du contenu dans la liste des en-têtes"
 
-#: localized_schema.php:47
+#: localized_schema.php:48
 msgid "Sort feeds by unread articles count"
 msgstr "Trier les flux par nombre d'articles non lus"
 
-#: localized_schema.php:48
+#: localized_schema.php:49
 msgid "User stylesheet URL"
 msgstr "URL de la feuille de style personnalisée"
 
-#: localized_schema.php:49
+#: localized_schema.php:50
 msgid "Link to user stylesheet to override default style, disabled if empty."
 msgstr ""
 "Lien vers une feuille de style personnalisée pour remplacer le style par "
 "défaut (laisser vide pour ne pas en utiliser)"
 
-#: localized_schema.php:51
+#: localized_schema.php:52
 msgid "Advanced"
 msgstr "Avancé"
 
-#: localized_schema.php:53
+#: localized_schema.php:54
 msgid "Blacklisted tags"
 msgstr "Étiquettes exclues"
 
-#: localized_schema.php:54
+#: localized_schema.php:55
 msgid ""
 "When auto-detecting tags in articles these tags will not be applied (comma-"
 "separated list)."
@@ -773,19 +779,19 @@ msgstr ""
 "Lors de l'autodétection des étiquettes dans les articles, ces étiquettes ne "
 "sont pas utilisées (en faire une liste, séparées par des virgules)"
 
-#: localized_schema.php:55
+#: localized_schema.php:56
 msgid "Confirm marking feed as read"
 msgstr "Demander confirmation pour marquer un flux comme lu"
 
-#: localized_schema.php:56
+#: localized_schema.php:57
 msgid "Enable icons in feedlist"
 msgstr "Afficher les icônes dans la liste des flux"
 
-#: localized_schema.php:57
+#: localized_schema.php:58
 msgid "Enable labels"
 msgstr "Utiliser les intitulés"
 
-#: localized_schema.php:58
+#: localized_schema.php:59
 msgid ""
 "Experimental support for virtual feeds based on user crafted SQL queries. "
 "This feature is highly experimental and at this point not user friendly. Use "
@@ -795,33 +801,33 @@ msgstr ""
 "personnalisées. Cette fonctionnalité est hautement expérimentale et pas "
 "encore ergonomique. Utilisez-là avec précaution."
 
-#: localized_schema.php:59
+#: localized_schema.php:60
 msgid "Long date format"
 msgstr "Format de date long"
 
-#: localized_schema.php:60
+#: localized_schema.php:61
 msgid "Set articles as unread on update"
 msgstr "Marquer les articles comme non lus lors des mises à jour"
 
-#: localized_schema.php:61
+#: localized_schema.php:62
 msgid "Short date format"
 msgstr "Format de date court"
 
-#: localized_schema.php:62
+#: localized_schema.php:63
 msgid "Show additional information in feedlist"
 msgstr "Afficher des informations supplémentaires dans la liste des flux"
 
-#: localized_schema.php:63
+#: localized_schema.php:64
 msgid "Strip unsafe tags from articles"
 msgstr "Éliminer les étiquettes non sûres des articles"
 
-#: localized_schema.php:64
+#: localized_schema.php:65
 msgid "Strip all but most common HTML tags when reading articles."
 msgstr ""
 "Élimine toutes les balises HTML sauf les plus courantes lors de la lecture "
 "des articles"
 
-#: localized_schema.php:65
+#: localized_schema.php:66
 msgid "Use more accessible date/time format for headlines"
 msgstr "Afficher la date et l'heure de manière plus lisible dans les en-têtes"
 
@@ -1039,11 +1045,11 @@ msgstr "&nbsp;&nbsp;Mettre à jour"
 
 #: tt-rss.php:148
 msgid "&nbsp;&nbsp;Mark as read"
-msgstr "&nbsp;&nbsp;Marquer comme lus"
+msgstr "Marquer comme lus"
 
 #: tt-rss.php:149
 msgid "&nbsp;&nbsp;(Un)hide read feeds"
-msgstr "&nbsp;&nbsp;(Dé)Masquer les flux lus"
+msgstr "(Dé)Masquer les flux lus"
 
 #: tt-rss.php:151
 msgid "Other actions:"
@@ -1580,9 +1586,8 @@ msgid "filter_type_descr"
 msgstr ""
 
 #: modules/pref-filters.php:298
-#, fuzzy
 msgid "action_description"
-msgstr "description"
+msgstr ""
 
 #: modules/pref-filters.php:302
 msgid "(Disabled)"
@@ -1655,9 +1660,8 @@ msgid "Personal data"
 msgstr "Données personnelles"
 
 #: modules/pref-prefs.php:220
-#, fuzzy
 msgid "E-mail"
-msgstr "Adresse électronique&nbsp;:"
+msgstr "Adresse électronique"
 
 #: modules/pref-prefs.php:233
 msgid "Change e-mail"
diff --git a/locale/ru_RU/LC_MESSAGES/messages.mo b/locale/ru_RU/LC_MESSAGES/messages.mo
index aa00d3fa..ed15850f 100644
Binary files a/locale/ru_RU/LC_MESSAGES/messages.mo and b/locale/ru_RU/LC_MESSAGES/messages.mo differ
diff --git a/locale/ru_RU/LC_MESSAGES/messages.po b/locale/ru_RU/LC_MESSAGES/messages.po
index 1f29196b..20f1dff5 100644
--- a/locale/ru_RU/LC_MESSAGES/messages.po
+++ b/locale/ru_RU/LC_MESSAGES/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 1.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2007-08-21 14:15+0400\n"
+"POT-Creation-Date: 2007-08-21 18:31+0400\n"
 "PO-Revision-Date: 2007-08-18 15:14+0400\n"
 "Last-Translator: Andrew Dolgov <cthulhoo@gmail.com>\n"
 "Language-Team: Русский <ru@li.org>\n"
@@ -676,119 +676,125 @@ msgid "Default article limit"
 msgstr "Количество статей по умолчанию"
 
 #: localized_schema.php:37
+msgid ""
+"Default limit for articles to display, any custom number you like (0 - "
+"disables)."
+msgstr ""
+
+#: localized_schema.php:38
 msgid "Enable feed categories"
 msgstr "Включить категории каналов"
 
-#: localized_schema.php:38
+#: localized_schema.php:39
 msgid "Enable search toolbar"
 msgstr ""
 
-#: localized_schema.php:39
+#: localized_schema.php:40
 msgid "Hide feeds with no unread messages"
 msgstr "Спрятать каналы без непрочитанных статей"
 
-#: localized_schema.php:40
+#: localized_schema.php:41
 msgid "Mark articles as read automatically"
 msgstr "Отмечать статьи как прочитанные автоматически"
 
-#: localized_schema.php:41
+#: localized_schema.php:42
 msgid ""
 "This option enables marking articles as read automatically in combined mode "
 "while you scroll article list."
 msgstr ""
 
-#: localized_schema.php:42
+#: localized_schema.php:43
 msgid "On catchup show next feed"
 msgstr "Показывать следующий канал при отметке как прочитанный"
 
-#: localized_schema.php:43
+#: localized_schema.php:44
 msgid ""
 "When \"Mark as read\" button is clicked in toolbar, automatically open next "
 "feed with unread articles."
 msgstr ""
 
-#: localized_schema.php:44
+#: localized_schema.php:45
 msgid "Open article links in new browser window"
 msgstr ""
 
-#: localized_schema.php:45
+#: localized_schema.php:46
 msgid "Reverse headline order (oldest first)"
 msgstr ""
 
-#: localized_schema.php:46
+#: localized_schema.php:47
 msgid "Show content preview in headlines list"
 msgstr ""
 
-#: localized_schema.php:47
+#: localized_schema.php:48
 msgid "Sort feeds by unread articles count"
 msgstr ""
 
-#: localized_schema.php:48
+#: localized_schema.php:49
 msgid "User stylesheet URL"
 msgstr "URL пользовательского файла стилей"
 
-#: localized_schema.php:49
+#: localized_schema.php:50
 msgid "Link to user stylesheet to override default style, disabled if empty."
 msgstr ""
 
-#: localized_schema.php:51
+#: localized_schema.php:52
 msgid "Advanced"
 msgstr "Расширенные"
 
-#: localized_schema.php:53
+#: localized_schema.php:54
 msgid "Blacklisted tags"
 msgstr "Черный список тегов"
 
-#: localized_schema.php:54
+#: localized_schema.php:55
 msgid ""
 "When auto-detecting tags in articles these tags will not be applied (comma-"
 "separated list)."
 msgstr ""
 
-#: localized_schema.php:55
+#: localized_schema.php:56
 msgid "Confirm marking feed as read"
 msgstr ""
 
-#: localized_schema.php:56
+#: localized_schema.php:57
 msgid "Enable icons in feedlist"
 msgstr ""
 
-#: localized_schema.php:57
+#: localized_schema.php:58
 msgid "Enable labels"
 msgstr "Включить метки"
 
-#: localized_schema.php:58
+#: localized_schema.php:59
 msgid ""
 "Experimental support for virtual feeds based on user crafted SQL queries. "
 "This feature is highly experimental and at this point not user friendly. Use "
 "with caution."
 msgstr ""
 
-#: localized_schema.php:59
+#: localized_schema.php:60
 msgid "Long date format"
 msgstr ""
 
-#: localized_schema.php:60
+#: localized_schema.php:61
 msgid "Set articles as unread on update"
 msgstr ""
 
-#: localized_schema.php:61
+#: localized_schema.php:62
 msgid "Short date format"
 msgstr "Короткий формат даты"
 
-#: localized_schema.php:62
+#: localized_schema.php:63
 msgid "Show additional information in feedlist"
 msgstr "Показивать расширенную информацию в списке каналов"
 
-#: localized_schema.php:63
+#: localized_schema.php:64
 msgid "Strip unsafe tags from articles"
 msgstr "Вырезать небезопасные теги из статей"
 
-#: localized_schema.php:64
+#: localized_schema.php:65
 msgid "Strip all but most common HTML tags when reading articles."
 msgstr "Вырезать все, кроме основных HTML тегов при показе статей."
 
-#: localized_schema.php:65
+#: localized_schema.php:66
 msgid "Use more accessible date/time format for headlines"
 msgstr "Использовать более удобный формат отображения даты/времени"
 
diff --git a/locale/zh_CN/LC_MESSAGES/messages.mo b/locale/zh_CN/LC_MESSAGES/messages.mo
index 88f0a0b6..e252f2b4 100644
Binary files a/locale/zh_CN/LC_MESSAGES/messages.mo and b/locale/zh_CN/LC_MESSAGES/messages.mo differ
diff --git a/locale/zh_CN/LC_MESSAGES/messages.po b/locale/zh_CN/LC_MESSAGES/messages.po
index ee06d49d..8a12d28b 100644
--- a/locale/zh_CN/LC_MESSAGES/messages.po
+++ b/locale/zh_CN/LC_MESSAGES/messages.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Tiny Tiny RSS1.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2007-08-21 14:15+0400\n"
+"POT-Creation-Date: 2007-08-21 18:31+0400\n"
 "PO-Revision-Date: 2007-08-19 19:03+0800\n"
 "Last-Translator: sluke <sluke520@yahoo.com.cn>\n"
 "Language-Team: hicode.org <sluke520@yahoo.com.cn>\n"
@@ -673,120 +673,126 @@ msgid "Default article limit"
 msgstr "默认文章限制"
 
 #: localized_schema.php:37
+msgid ""
+"Default limit for articles to display, any custom number you like (0 - "
+"disables)."
+msgstr ""
+
+#: localized_schema.php:38
 msgid "Enable feed categories"
 msgstr "开启feed分类"
 
-#: localized_schema.php:38
+#: localized_schema.php:39
 msgid "Enable search toolbar"
 msgstr ""
 
-#: localized_schema.php:39
+#: localized_schema.php:40
 msgid "Hide feeds with no unread messages"
 msgstr "隐藏feed源以读信息"
 
-#: localized_schema.php:40
+#: localized_schema.php:41
 msgid "Mark articles as read automatically"
 msgstr "自动标志文章为已读"
 
-#: localized_schema.php:41
+#: localized_schema.php:42
 msgid ""
 "This option enables marking articles as read automatically in combined mode "
 "while you scroll article list."
 msgstr "启用该选项时，当你在联合模式下滚动文章列表时自动编辑文章为已读。"
 
-#: localized_schema.php:42
+#: localized_schema.php:43
 msgid "On catchup show next feed"
 msgstr "自动显示未读"
 
-#: localized_schema.php:43
+#: localized_schema.php:44
 msgid ""
 "When \"Mark as read\" button is clicked in toolbar, automatically open next "
 "feed with unread articles."
 msgstr ""
 "当工具栏上 \"标志为已读 \" 按钮被点击时,自动打开下一个RSS源中未读文章。"
 
-#: localized_schema.php:44
+#: localized_schema.php:45
 msgid "Open article links in new browser window"
 msgstr "新窗口打开文章连结"
 
-#: localized_schema.php:45
+#: localized_schema.php:46
 msgid "Reverse headline order (oldest first)"
 msgstr "反向提要排列（从旧到新）"
 
-#: localized_schema.php:46
+#: localized_schema.php:47
 msgid "Show content preview in headlines list"
 msgstr "在提要列表中显示内容预览"
 
-#: localized_schema.php:47
+#: localized_schema.php:48
 msgid "Sort feeds by unread articles count"
 msgstr "以未读文章数量排序feed源"
 
-#: localized_schema.php:48
+#: localized_schema.php:49
 msgid "User stylesheet URL"
 msgstr "用户样式表 URL"
 
-#: localized_schema.php:49
+#: localized_schema.php:50
 msgid "Link to user stylesheet to override default style, disabled if empty."
 msgstr "用户样式表优先，留空为不启用。"
 
-#: localized_schema.php:51
+#: localized_schema.php:52
 msgid "Advanced"
 msgstr "高级"
 
-#: localized_schema.php:53
+#: localized_schema.php:54
 msgid "Blacklisted tags"
 msgstr "被列入黑名单的标签"
 
-#: localized_schema.php:54
+#: localized_schema.php:55
 msgid ""
 "When auto-detecting tags in articles these tags will not be applied (comma-"
 "separated list)."
 msgstr "自动检测文章中标签时，这些标签不适用（用半角逗号隔开）"
 
-#: localized_schema.php:55
+#: localized_schema.php:56
 msgid "Confirm marking feed as read"
 msgstr "确认标记所有Feed为已读..."
 
-#: localized_schema.php:56
+#: localized_schema.php:57
 msgid "Enable icons in feedlist"
 msgstr "feed列表中不启用ico"
 
-#: localized_schema.php:57
+#: localized_schema.php:58
 msgid "Enable labels"
 msgstr "开启标签"
 
-#: localized_schema.php:58
+#: localized_schema.php:59
 msgid ""
 "Experimental support for virtual feeds based on user crafted SQL queries. "
 "This feature is highly experimental and at this point not user friendly. Use "
 "with caution."
 msgstr "SQL支持，这是测试功能，请谨慎使用。"
 
-#: localized_schema.php:59
+#: localized_schema.php:60
 msgid "Long date format"
 msgstr "长的时间格式"
 
-#: localized_schema.php:60
+#: localized_schema.php:61
 msgid "Set articles as unread on update"
 msgstr "更新后标记文章为未读"
 
-#: localized_schema.php:61
+#: localized_schema.php:62
 msgid "Short date format"
 msgstr "短的时间格式"
 
-#: localized_schema.php:62
+#: localized_schema.php:63
 msgid "Show additional information in feedlist"
 msgstr "在feed列表中显示附加信息"
 
-#: localized_schema.php:63
+#: localized_schema.php:64
 msgid "Strip unsafe tags from articles"
 msgstr "从文章中过滤不安全标签"
 
-#: localized_schema.php:64
+#: localized_schema.php:65
 msgid "Strip all but most common HTML tags when reading articles."
 msgstr "阅读文章时过滤所有常见html标签"
 
-#: localized_schema.php:65
+#: localized_schema.php:66
 msgid "Use more accessible date/time format for headlines"
 msgstr "提要使用更方便的 日期／时间 格式"
 
diff --git a/localized_schema.php b/localized_schema.php
index 87a1d8ff..7d254724 100644
--- a/localized_schema.php
+++ b/localized_schema.php
@@ -34,6 +34,7 @@
 	__("Combined feed display");
 	__("Display expanded list of feed articles, instead of separate displays for headlines and article content");
 	__("Default article limit");
+	__("Default limit for articles to display, any custom number you like (0 - disables).");
 	__("Enable feed categories");
 	__("Enable search toolbar");
 	__("Hide feeds with no unread messages");
diff --git a/sanity_check.php b/sanity_check.php
index 74dca116..b1c145d2 100644
--- a/sanity_check.php
+++ b/sanity_check.php
@@ -2,7 +2,7 @@
 	require_once "functions.php";
 
 	define('EXPECTED_CONFIG_VERSION', 7);
-	define('SCHEMA_VERSION', 19);
+	define('SCHEMA_VERSION', 20);
 
 	if (!file_exists("config.php")) {
 		print __("<b>Fatal Error</b>: You forgot to copy 
diff --git a/schema/ttrss_schema_mysql.sql b/schema/ttrss_schema_mysql.sql
index e55038b7..dfa489c4 100644
--- a/schema/ttrss_schema_mysql.sql
+++ b/schema/ttrss_schema_mysql.sql
@@ -196,7 +196,7 @@ create table ttrss_tags (id integer primary key auto_increment,
 
 create table ttrss_version (schema_version int not null) TYPE=InnoDB;
 
-insert into ttrss_version values (19);
+insert into ttrss_version values (20);
 
 create table ttrss_prefs_types (id integer not null primary key, 
 	type_name varchar(100) not null) TYPE=InnoDB;
@@ -234,8 +234,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_
    'Default limit for articles to display, any custom number you like (0 - disables).');
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('ALLOW_DUPLICATE_POSTS', 1, 'true', 'Allow duplicate posts',1,
-	'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. 
-	When disabled, it forces same posts from different feeds to appear only once.');
+	'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. When disabled, it forces same posts from different feeds to appear only once.');
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('USER_STYLESHEET_URL', 2, '', 'User stylesheet URL',2,
 	'Link to user stylesheet to override default style, disabled if empty.');
diff --git a/schema/ttrss_schema_pgsql.sql b/schema/ttrss_schema_pgsql.sql
index abf74b7e..f7ad3e4b 100644
--- a/schema/ttrss_schema_pgsql.sql
+++ b/schema/ttrss_schema_pgsql.sql
@@ -177,7 +177,7 @@ create index ttrss_tags_owner_uid_index on ttrss_tags(owner_uid);
 
 create table ttrss_version (schema_version int not null);
 
-insert into ttrss_version values (19);
+insert into ttrss_version values (20);
 
 create table ttrss_prefs_types (id integer not null primary key, 
 	type_name varchar(100) not null);
@@ -211,8 +211,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_
 	'Default limit for articles to display, any custom number you like (0 - disables).');
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('ALLOW_DUPLICATE_POSTS', 1, 'true', 'Allow duplicate posts',1,
-	'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. 
-	When disabled, it forces same posts from different feeds to appear only once.');
+	'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. When disabled, it forces same posts from different feeds to appear only once.');
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('USER_STYLESHEET_URL', 2, '', 'User stylesheet URL',2,
 	'Link to user stylesheet to override default style, disabled if empty.');
diff --git a/schema/versions/mysql/20.sql b/schema/versions/mysql/20.sql
new file mode 100644
index 00000000..34765451
--- /dev/null
+++ b/schema/versions/mysql/20.sql
@@ -0,0 +1,3 @@
+UPDATE ttrss_prefs SET help_text = 'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. When disabled, it forces same posts from different feeds to appear only once.' WHERE pref_name = 'ALLOW_DUPLICATE_POSTS';
+
+update ttrss_version set schema_version = 20;
diff --git a/schema/versions/pgsql/20.sql b/schema/versions/pgsql/20.sql
new file mode 100644
index 00000000..34765451
--- /dev/null
+++ b/schema/versions/pgsql/20.sql
@@ -0,0 +1,3 @@
+UPDATE ttrss_prefs SET help_text = 'This option is useful when you are reading several planet-type aggregators with partially colliding userbase. When disabled, it forces same posts from different feeds to appear only once.' WHERE pref_name = 'ALLOW_DUPLICATE_POSTS';
+
+update ttrss_version set schema_version = 20;