notes/Circle Basic-EfSsprMw.html
<!DOCTYPE HTML>
<html>
  <head>
  </head>
  <body>
        <canvas id="MyCanvas" width="600" height="300"></canvas>

        <script>
                var canvas = document.getElementById('MyCanvas');
                var context = canvas.getContext('2d');
		var x = canvas.width / 2;
		var y = canvas.height / 2;
		var radius = 75;

		context.beginPath();
		context.arc(x, y, radius, 0, 2 * Math.PI, false);
		context.lineWidth = 15;
		context.strokeStyle = "Blue";
		context.fillStyle = 'Red';
		context.fill();
		context.stroke();
        </script>
  </body>
</html>

syntax highlighted by Code2HTML, v. 0.9.1