wn_title -- title window

        USAGE

          wn_title(wn,title)
          WINDOWPTR wn;
          char *title;

                wn    - window handle
                title - string pointer to title

          The title is displayed on the top border of the window using
          the currently defined border attribute.  The cursor is
          positioned off the screen after the title is written.

        RETURNS

          TRUE if all is well, NULL if the title is to large to fit on
          the top border or errror.

        CAUTIONS

          The window "wn" automatically becomes the top window tile upon
          return.