draw package - point_size



Hi,

What is minimal point size ?
It is not described in help or www.
If I'm not wrong it is 0.2
Smaller sizes give no points.

Best regards

Adam

-------------
Maxima version: 5.23.2
Maxima build date: 14:58 1/18/2011
Host type: x86_64-unknown-linux-gnu
Lisp implementation type: SBCL
Lisp implementation version: 1.0.29.11.debian

code : 

draw2d(	terminal   = 'png,
	file_name = "u",
        dimensions = [1900,1300],
	title      = "Bifurcation diagram, x[i+1] = r*x[i]*(1 - x[i])",
	point_type = filled_circle,
	point_size = 0.2,
	color = black,
	points(pts));