2 <svg width=
"500" height=
"500" xmlns=
"http://www.w3.org/2000/svg" xmlns:
xlink=
"http://www.w3.org/1999/xlink">
4 <marker style=
"overflow:visible;" id=
"bip" refX=
"0" refY=
"0" orient=
"auto">
5 <path style=
"stroke: green" d=
"M 0,-3 v 6" />
10 path.boundary {stroke: red; fill: #ccc; stroke-width:
3; marker-mid: url(#bip); marker-end: url(#bip)}
13 <path class=
"boundary" d=
"m 20,20 v 90 90 90 90 90 h 90 90 90 90 90 v -90 -90 -90 -90 -90 h -90 -90 -90 -90 z" />