M:	Show / hide menu
Mouse wheel:	Zoom / pan
S:	Save .svg
P:	Pattern
P(x,y,h): Javascript
Pattern presets:	Square Circular Circular % 2 Circular RND Circular Bayer Mandelbrot Newton-Rhapson h
Size:
Line size:
Line1 Col:
Line2 Col:
Debug:	0 1