either window; by default, the driver code uses \fBstdscr\fR for both.
.PP
In the \fBset_\fR functions, window argument of \fBNULL\fR is treated as though
either window; by default, the driver code uses \fBstdscr\fR for both.
.PP
In the \fBset_\fR functions, window argument of \fBNULL\fR is treated as though