/sys$common/syshlp/helplib.hlb CC, Run-time functions, [w]clrtoeol  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Curses Screen Management function and macro that erase the contents
  of the window from the current cursor position to the end of the
  line on the specified window.  The clrtoeol macro acts on the
  stdscr window.

  Syntax:

       #include <curses.h>

       int clrtoeol();
       int wclrtoeol(WINDOW *win);