diff --git a/nyagos_en.md b/nyagos_en.md
index c754df2d..50130cad 100644
--- a/nyagos_en.md
+++ b/nyagos_en.md
@@ -55,6 +55,7 @@ Execute `COMMAND` and continue the command-line.
 * UP , Ctrl-P        : Replace commandline to previous input one
 * DOWN , Ctrl-N      : Replace commnadline to next input one
 * TAB , Ctrl-I       : Complete file or command-name
+* Ctrl-C             : Drop text all
 
 
 ## Built-in commnads
@@ -204,7 +205,7 @@ FUNCNAME are:
         "BACKWARD_DELETE_CHAR" "BACKWARD_CHAR" "CLEAR_SCREEN" "DELETE_CHAR"
         "DELETE_OR_ABORT" "ACCEPT_LINE" "KILL_LINE" "UNIX_LINE_DISCARD"
         "FORWARD_CHAR" "BEGINNING_OF_LINE" "PASS" "YANK" "KILL_WHOLE_LINE"
-        "END_OF_LINE" "COMPLETE" "PREVIOUS_HISTORY" "NEXT_HISTORY"
+        "END_OF_LINE" "COMPLETE" "PREVIOUS_HISTORY" "NEXT_HISTORY" "INTR"
 
 If it succeeded, it returns true only. Failed, it returns nil and error-message.
 Cases are ignores and, the character '-' is same as '\_'.
diff --git a/nyagos_ja.md b/nyagos_ja.md
index 1f019f71..074a6fe1 100644
--- a/nyagos_ja.md
+++ b/nyagos_ja.md
@@ -65,6 +65,7 @@ UNIX
 * ↑ , Ctrl-P        : ヒストリ：一つ前の入力内容を展開する
 * ↓ , Ctrl-N        : ヒストリ：一つ後の入力内容を展開する
 * TAB , Ctrl-I       : ファイル名・コマンド名補完
+* Ctrl-C             : 入力内容を破棄
 
 ## 内蔵コマンド
 
@@ -242,7 +243,7 @@ UTF8
         "BACKWARD_DELETE_CHAR" "BACKWARD_CHAR" "CLEAR_SCREEN" "DELETE_CHAR"
         "DELETE_OR_ABORT" "ACCEPT_LINE" "KILL_LINE" "UNIX_LINE_DISCARD"
         "FORWARD_CHAR" "BEGINNING_OF_LINE" "PASS" "YANK" "KILL_WHOLE_LINE"
-        "END_OF_LINE" "COMPLETE" "PREVIOUS_HISTORY" "NEXT_HISTORY"
+        "END_OF_LINE" "COMPLETE" "PREVIOUS_HISTORY" "NEXT_HISTORY" "INTR"
 
 成功すると true を、失敗すると nil とエラーメッセージを返します。
 大文字・小文字は区別せず、\_ のかわりに - を使うことができます。