Open your console (How?) to read the canvas events.

Try pasting this code into your console:

lines = [
[{x:0.072, y:0.253},{x:0.063, y:0.434}],
[{x:0.070, y:0.345},{x:0.156, y:0.343}],
[{x:0.162, y:0.268},{x:0.154, y:0.401}],
[{x:0.212, y:0.277},{x:0.218, y:0.416}],
[{x:0.210, y:0.274},{x:0.298, y:0.268}],
[{x:0.218, y:0.326},{x:0.309, y:0.328}],
[{x:0.222, y:0.410},{x:0.309, y:0.406}],
[{x:0.361, y:0.270},{x:0.369, y:0.395}],
[{x:0.369, y:0.397},{x:0.425, y:0.395}],
[{x:0.464, y:0.279},{x:0.462, y:0.401}],
[{x:0.462, y:0.401},{x:0.537, y:0.397}],
[{x:0.587, y:0.283},{x:0.608, y:0.429}],
[{x:0.589, y:0.281},{x:0.710, y:0.276}],
[{x:0.701, y:0.274},{x:0.722, y:0.416}],
[{x:0.613, y:0.423},{x:0.722, y:0.410}]]

lines.map(line => canvas.drawLine(line));