^image.line(x0;y0;x1;y1;color)
The method draws on the image a line of specified color from (x0:y0) to (x1:y1).
Example $square[^image::create(100;100;0x000000)]
^square.line(0;0;100;100;0xFFFFFF)
$response:body[^square.gif[]]
Browser will display a black 100x100 square diagonally crossed by a white line.