docs/img/polyline1b.svg

<svg version="1.1" width="350" height="250" style="background-color:white;" xmlns="http://www.w3.org/2000/svg">
<style>
.txt1 { font: bold 12px sans-serif; };
</style>
<polygon fill="none" stroke="rgb(250,0,20)" stroke-width="1" points="145,156 220,120 190,90 235,60 130,30 175,105 130,66 100,96 118,153 58,192 145,216 "/>
<rect fill="none" x="58" y="30" width="177" height="186" stroke="rgb(150,150,120)" stroke-width="1"/>
<circle fill="none" cx="145" cy="216" r="4" stroke="rgb(0,250,0)" stroke-width="2"/>
<circle fill="none" cx="235" cy="60" r="4" stroke="rgb(0,0,250)" stroke-width="2"/>
<circle fill="none" cx="58" cy="192" r="4" stroke="rgb(0,250,0)" stroke-width="2"/>
<circle fill="none" cx="130" cy="30" r="4" stroke="rgb(0,0,250)" stroke-width="2"/>
</svg>