On this screen you can create a double spiral pattern, which can be used 
in blocks and as pantograph or line pattern. The start and end points of 
the spiral are kept on the same horizontal line.

<b>Number Of Spirals
Set the number of spirals. The pattern is sized to fit the block, so the 
number of spirals will determine the density of the pattern.
NOTE that the number can be changed in fractions, which causes the 
center of the pattern to turn.

