A graphics port
A real number
A real number
A real number
A real number
General graphics port drawing arguments
The draw-line
function draws a line from ( from-x from-y ) to ( to-x to-y ). The graphics state parameters transform, foreground, background, operation, thickness, scale-thickness, dashed, dash, line-end-style , stipple, pattern , mask-x, mask , and mask are used.