diff --git a/include/unctrl.h b/include/unctrl.h
new file mode 100644
index 0000000..1f3ed62
--- /dev/null
+++ b/include/unctrl.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+ * Copyright 2020 Thomas E. Dickey                                          *
+ * Copyright 1998-2001,2009 Free Software Foundation, Inc.                  *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ ****************************************************************************/
+
+/*
+ * unctrl.h
+ *
+ * Display a printable version of a control character.
+ * Control characters are displayed in caret notation (^x), DELETE is displayed
+ * as ^?. Printable characters are displayed as is.
+ */
+
+/* $Id: unctrl.h.in,v 1.12 2020/02/02 23:34:34 tom Exp $ */
+
+#ifndef NCURSES_UNCTRL_H_incl
+#define NCURSES_UNCTRL_H_incl	1
+
+#undef  NCURSES_VERSION
+#define NCURSES_VERSION "6.5"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <curses.h>
+
+#undef unctrl
+NCURSES_EXPORT(NCURSES_CONST char *) unctrl (chtype);
+
+#if 1
+NCURSES_EXPORT(NCURSES_CONST char *) NCURSES_SP_NAME(unctrl) (SCREEN*, chtype);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NCURSES_UNCTRL_H_incl */