Attribute	Values	Default
kind	route, traffic, or omitted	normal connection
color	CSS hex color	depends on kind
stroke-width, width	positive number	1
stroke-style	solid, dashed, dotted	solid
start-arrowhead, end-arrowhead	none, arrow, triangle, stealth, diamond, oval	depends on kind
arrowhead	same as end-arrowhead	alias
src-side, dst-side	top, right, bottom, left	automatic
src-anchor, dst-anchor	side-1 through side-5	automatic
bends, points, via	inline coordinate list	none
grid	positive number	router default
scale, coordinate-scale	positive number	1