Number of sand grains dropped during coloring. More grains cause
a denser colour but use more cpu power.
.TP 8
-.B \-circle-percent \fIcirclepercent\fP (Default: \fI33\fP)
+.B \-circle-percent \fIcirclepercent\fP (Default: \fI0\fP)
The percentage of the cracks will be circular.
.SH ENVIRONMENT
.PP