[\-delay \fInumber\fP]
[\-ncolors \fInumber\fP]
[\-thickness \fInumber\fP]
+[\-fps]
.SH DESCRIPTION
Another example of the fun you can have with moire interference patterns;
this hack generates fields of concentric circles or ovals, and combines the
.TP 8
.B \-thickness \fInumber\fP
Thickness of lines, in pixels. Default: 0.
+.TP 8
+.B \-fps
+Display the current frame rate and CPU load.
.SH ENVIRONMENT
.PP
.TP 8