-X/Open Curses does not provide details on how the rendition is changed.
-This implementation follows the approach used in SVr4 curses,
-which is explained in the manual page for \fBwbkgd\fP.
+If the terminal does not support color,
+or if color has not been initialized with \fB\%start_color\fP(3X),
+.I \%ncurses
+ignores the new background character's color attribute.
+.SS "bkgrndset, wbkgrndset"
+\fB\%bkgrndset\fP and \fB\%wbkgrndset\fP manipulate the background of
+the applicable window,
+without updating the character cells as \fB\%bkgrnd\fP and
+\fB\%wbkgrnd\fP do;
+only future writes reflect the updated background.
+.SS "getbkgrnd, wgetbkgrnd"
+The \fB\%getbkgrnd\fP and \fB\%wgetbkgrnd\fP functions obtain the
+background character and attribute pair of \fB\%stdscr\fP or the
+specified window and store it via the
+.I wch
+pointer.