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

  Curses Screen Management function and macro that activate the video
  display attributes boldface, blinking, reverse video, and
  underlining within the window.  The attributes are represented by
  _BOLD, _BLINK, _REVERSE, and _UNDERLINE.  The setattr macro acts on
  the stdscr window.

  Syntax:

       #include <curses.h>

       int setattr(int attr);
       wsetattr(WINDOW *win, int attr);