How to apply (or maintain) line style in Raphael after scaling?
paper = new Raphael(0, 0, 200, 200);
paper.path("M 0,0 l 200,200").attr({"stroke-width": "8px"});

paper.path("M 0,0 l 200,200").attr({"stroke-width": "8px"}).transform("s -1,1");