\fBwmove\fP, and return an error if the position is outside the window,
or if the window pointer is null.
.SH NOTES
Note that \fBdelch\fR, \fBmvdelch\fR, and \fBmvwdelch\fR may be macros.
.SH PORTABILITY
\fBwmove\fP, and return an error if the position is outside the window,
or if the window pointer is null.
.SH NOTES
Note that \fBdelch\fR, \fBmvdelch\fR, and \fBmvwdelch\fR may be macros.
.SH PORTABILITY