One per line, written as in a link. lbl=0:Dubhe names point 0. sty=s0-6:y,w3 draws sides 0 to 6 yellow, 3 pixels wide; p instead of s styles points. A colour is one of r o y g c b v m p n k w or six hex digits; add ,dash for a dashed line. Points count from 0 in the order the shape runs. They travel in the link beside the code and never change where it points.