




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
 and 
mask
 are used. Additionally on Unix only, 
stipple, pattern
, 
mask-x,
 
mask-y
 are used.