diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index ce4637e..cfb94b0 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -83,7 +83,7 @@
   "config_copyToClipboardFormats_down":     { "message": "Move Down" },
   "config_copyToClipboardFormats_restoreDefaults": { "message": "Restore default formats keeping added formats" },
   "config_copyToClipboardFormats_accesskey": { "message": "A non-whitespace character next to \"&\" (for example \"L\" in \"&Location\") in the label will become the accesskey for the item." },
-  "config_copyToClipboardFormats_placeholders": { "message": "Available place holders for formats:\n%URL%=Page URL,\n%TITLE%=Page Title,\n%TREE_INDENT(indenter1, indenter2, ... indenterN)%=Indent (powered by tabs management addon like Tree Style Tab)\n%TAB%=Tab,\n%EOL%=Line Feed,\n%CONTAINER_NAME(prefix, suffix)%=Container name with prefix and suffix (ex. `%CONTAINER_NAME(\"[\", \"]\")%` will be filled like \"[Personal]\" for \"Personal\" conainer tab),\n%CONTAINER_URL%=URL with \"ext+container:\" scheme (for Open external links in a container)" },
+  "config_copyToClipboardFormats_placeholders": { "message": "Available place holders for formats:\n%URL%=Page URL,\n%TITLE%=Page Title,\n%TREE_INDENT(indenter1, indenter2, ... indenterN)%=Indent\n%TAB%=Tab,\n%EOL%=Line Feed,\n%CONTAINER_NAME(prefix, suffix)%=Container name with prefix and suffix (ex. `%CONTAINER_NAME(\"[\", \"]\")%` will be filled like \"[Personal]\" for \"Personal\" conainer tab),\n%CONTAINER_URL%=URL with \"ext+container:\" scheme (for Open external links in a container)" },
   "config_copyToClipboardFormats_placeholders_special": { "message": "Place holders based on page contents (you need to grant required permission):\n%AUTHOR%=Author name (specified by META),\n%DESCRIPTION%=Description (specified by META),\n%KEYWORDS%=Search keywords (specified by META),\n%RT%=Copy as a rich text (Note: this placeholder itself is cleared from the copied text),\n%PREFIX(...)%=Add given prefix at the first,\n%SUFFIX(...)%=Add given suffix at the last" },
   "config_copyToClipboardFormats_placeholders_replace": { "message": "`%REPLACE(\"base text\", \"match pattern regular expression 1\", \"replaced text 1\", \"match pattern regular expression 2\", \"replaced text 2\", ...)%` will return text replaced with regular expressions. \nFor example: \n%REPLACE(\"%URL%\", \"\\?.*$\", \"\")% \n => URL with stripped query parameters \n%REPLACE(\"%URL%\", \"^((?!\\w+://([^/]*\\.)?(google\\.com|duckduckgo\\.com)/.*).*)\\?.*$\", \"$$1\")% \n => URL with stripped query parameters, except Google and DuckDuckGo" },
   "config_copyToClipboardFormats_placeholders_html_safe": { "message": "`%HTML_SAFE(...)%` will return text escaped for HTML. For example:\n%HTML_SAFE(%TITLE%)% => Title escaped for HTML." },
@@ -107,7 +107,7 @@
 
   "config_modeForNoSelection_caption":               { "message": "Behavior on no multiselection" },
   "config_modeForNoSelectionTab_caption":            { "message": "On an Individual Tab" },
-  "config_modeForNoSelectionTree_caption":           { "message": "On the Parent Tab of a Tree (require tabs management addon like Tree Style Tab)" },
+  "config_modeForNoSelectionTree_caption":           { "message": "On the Parent Tab of a Tree" },
   "config_modeForNoSelection_label":                 { "message": "Regular Operation" },
   "config_modeForNoSelection_nothing_label":         { "message": "(do nothing)" },
   "config_modeForNoSelection_choose_label":          { "message": "Choose from menu always" },
diff --git a/_locales/ja/messages.json b/_locales/ja/messages.json
index b53ddaa..8cb4847 100644
--- a/_locales/ja/messages.json
+++ b/_locales/ja/messages.json
@@ -83,7 +83,7 @@
   "config_copyToClipboardFormats_down":     { "message": "下へ移動" },
   "config_copyToClipboardFormats_restoreDefaults": { "message": "追加した書式を維持して既定の書式を復元する" },
   "config_copyToClipboardFormats_accesskey": { "message": "ラベル内で「&」に続く空白以外の文字（例：「&Location」の「L」）はその項目のアクセスキーになります。" },
-  "config_copyToClipboardFormats_placeholders": { "message": "書式には以下のプレースホルダを使えます：\n%URL%=ページのURL,\n%TITLE%=ページのタイトル,\n%TREE_INDENT(indenter1, indenter2, ... indenterN)%=インデント（Tree Style Tabなどのタブ管理アドオンを使用）\n%TAB%=タブ文字,\n%EOL%=改行,\n%CONTAINER_NAME(prefix, suffix)%=コンテナーの名前（例：「%CONTAINER_NAME('[', ']')%」は「個人用」のコンテナータブであれば「[個人用]」になります）,\n%CONTAINER_URL%=\"ext+container:\"スキームを伴ったURL（Open external links in a container用）" },
+  "config_copyToClipboardFormats_placeholders": { "message": "書式には以下のプレースホルダを使えます：\n%URL%=ページのURL,\n%TITLE%=ページのタイトル,\n%TREE_INDENT(indenter1, indenter2, ... indenterN)%=インデント\n%TAB%=タブ文字,\n%EOL%=改行,\n%CONTAINER_NAME(prefix, suffix)%=コンテナーの名前（例：「%CONTAINER_NAME('[', ']')%」は「個人用」のコンテナータブであれば「[個人用]」になります）,\n%CONTAINER_URL%=\"ext+container:\"スキームを伴ったURL（Open external links in a container用）" },
   "config_copyToClipboardFormats_placeholders_special": { "message": "ページの内容に基づくプレースホルダー（権限の許可が必要です）：\n%AUTHOR%=metaタグで指定された作者名,\n%DESCRIPTION%=metaタグで指定された説明文,\n%KEYWORDS%=metaタグで指定された検索用キーワード,\n%RT%=リッチテキストとしてコピーする（このプレースホルダ自体は空文字に変換されます）,\n%PREFIX(...)%=指定文字列を全体の前に足す,\n%SUFFIX(...)%=指定文字列を全体の後に足す" },
   "config_copyToClipboardFormats_placeholders_html_safe": { "message": "%HTML_SAFE(...)% で文字列をHTML用にエスケープできます。\n例：\n%HTML_SAFE(%TITLE%)%→HTML用にエスケープされたタイトル" },
   "config_copyToClipboardFormats_placeholders_md_safe": { "message": "%MD_SAFE(...)% や %MD_LINK_TITLE_SAFE(...)% で文字列をMarkdown用にもエスケープできます。\n例：\n[%MD_LINK_TITLE_SAFE(%TITLE%)%](%MD_SAFE(%URL%)%) → Markdownでのリンク" },
@@ -107,7 +107,7 @@
 
   "config_modeForNoSelection_caption":               { "message": "タブが複数選択されていないときの動作" },
   "config_modeForNoSelectionTab_caption":            { "message": "単独のタブに対して操作した場合" },
-  "config_modeForNoSelectionTree_caption":           { "message": "ツリーの親タブに対して操作した場合（Tree Style Tabなどのタブ管理アドオンが必要）" },
+  "config_modeForNoSelectionTree_caption":           { "message": "ツリーの親タブに対して操作した場合" },
   "config_modeForNoSelection_label":                 { "message": "通常の操作" },
   "config_modeForNoSelection_nothing_label":         { "message": "(何もしない)" },
   "config_modeForNoSelection_choose_label":          { "message": "その都度メニューから選択する" },
diff --git a/_locales/zh_CN/messages.json b/_locales/zh_CN/messages.json
index 5e0f02a..b88200a 100644
--- a/_locales/zh_CN/messages.json
+++ b/_locales/zh_CN/messages.json
@@ -64,7 +64,7 @@
         "hash": "7292b900eb5211e2a5c8cc8219de8a1b"
     },
     "config_copyToClipboardFormats_placeholders": {
-        "message": "格式栏可用的占位符：\n%URL%=页面网址，\n%TITLE%=页面标题，\n%AUTHOR%=作者名（META 信息指定），\n%DESCRIPTION%=描述（META 信息指定），\n%KEYWORDS%=搜索关键词（META 信息指定），\n%URL_HTMLIFIED%=为 HTML 转义的 URL，\n%TITLE_HTMLIFIED%=为 HTML 转义的标题，\n%AUTHOR_HTMLIFIED%=为 HTML 转义的作者名，\n%DESCRIPTION_HTMLIFIED%=为 HTML 转义的描述，\n%KEYWORDS_HTMLIFIED%=为 HTML 转义的关键词，\n%TST_INDENT(indenter)%、%TST_INDENT(indenter1)(indenter2)...(indenterN)%=层级（由 Tree Style Tab 提供）\n%TAB%=Tab，\n%EOL%=换行, \n%CONTAINER_NAME(prefix, suffix)%=Container name with prefix and suffix (ex. \"%CONTAINER_NAME('[', ']')%\" will be filled like \"[Personal]\" for \"Personal\" conainer tab),\n%CONTAINER_NAME_HTMLIFIED(prefix, suffix)%=Container name with prefix and suffix escaped for HTML,\n%CONTAINER_URL%=URL with \"ext+container:\" scheme (for Open external links in a container),\n%CONTAINER_URL_HTMLIFIED%=URL with \"ext+container:\" scheme escaped for HTML，\n%RT%=复制为富文本（注：复制的文本中不含此占位符）,\n%PREFIX(...)%=Add given prefix at the first,\n%SUFFIX(...)%=Add given suffix at the last",
+        "message": "格式栏可用的占位符：\n%URL%=页面网址，\n%TITLE%=页面标题，\n%AUTHOR%=作者名（META 信息指定），\n%DESCRIPTION%=描述（META 信息指定），\n%KEYWORDS%=搜索关键词（META 信息指定），\n%URL_HTMLIFIED%=为 HTML 转义的 URL，\n%TITLE_HTMLIFIED%=为 HTML 转义的标题，\n%AUTHOR_HTMLIFIED%=为 HTML 转义的作者名，\n%DESCRIPTION_HTMLIFIED%=为 HTML 转义的描述，\n%KEYWORDS_HTMLIFIED%=为 HTML 转义的关键词，\n%TREE_INDENT(indenter)%、%TREE_INDENT(indenter1)(indenter2)...(indenterN)%=层级\n%TAB%=Tab，\n%EOL%=换行, \n%CONTAINER_NAME(prefix, suffix)%=Container name with prefix and suffix (ex. \"%CONTAINER_NAME('[', ']')%\" will be filled like \"[Personal]\" for \"Personal\" conainer tab),\n%CONTAINER_NAME_HTMLIFIED(prefix, suffix)%=Container name with prefix and suffix escaped for HTML,\n%CONTAINER_URL%=URL with \"ext+container:\" scheme (for Open external links in a container),\n%CONTAINER_URL_HTMLIFIED%=URL with \"ext+container:\" scheme escaped for HTML，\n%RT%=复制为富文本（注：复制的文本中不含此占位符）,\n%PREFIX(...)%=Add given prefix at the first,\n%SUFFIX(...)%=Add given suffix at the last",
         "hash": "e4fa53727b5f0e073c95814d82357d4a"
     },
     "config_shortcuts_caption": {