Draw on the root window.
.TP 8
.B \-delay \fInumber\fP
-Per-frame delay, in microseconds. Default: 10000 (0.01 seconds.).
+Per-frame delay, in microseconds. Default: 15000 (0.015 seconds.).
.TP 8
.B \-fps | \-no-fps
Whether to show a frames-per-second display at the bottom of the screen.