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<html>↩
<head>↩
<script type="text/javascript">↩
window.onload = function() {↩
var ctx = document.getElementById("c1").getContext("2d");↩
↩
ctx.moveTo(50, 50);↩
ctx.lineTo(250, 50);↩
ctx.lineTo(250, 250);↩
ctx.lineTo(50, 250);↩
ctx.lineTo(50, 50);↩
↩
ctx.moveTo(100, 100);↩
ctx.lineTo(100, 200);↩
ctx.lineTo(200, 200);↩
ctx.lineTo(200, 100);↩
ctx.lineTo(100, 100);↩
↩
ctx.fill();↩
}↩
</script>↩
</head>↩
<body>↩
<div><canvas id="c1" width="300" height="300"></canvas></div>↩
</body>↩
</html>↩