On this screen you can create an open spiral pattern, which can be used 
as a block pattern. Although it is an open pattern, using it on pantographs 
or as line pattern will cause stray interconencting lines and pattern 
overlap.

<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 end 
point of the spiral to move around.

<b>Inner Size
You can create a hollow spiral by changing this number. 

