Line caps in SVG
A simple example of line cap styles in SVG.
<!DOCTYPE html>
<html>
<body>
<svg height="500" width="500">
<g fill="none" stroke="blue" stroke-width="20">
<path stroke-linecap="square" d="M25 100 l215 0" />
<path stroke-linecap="round" d="M25 60 l215 0" />
<path stroke-linecap="butt" d="M25 20 l215 0" />
</g>
</svg>
</body>
</html>