def _svg_line(x1, y1, x2, y2, color, width):
    color = _svg_color(color)
    return '<line x1="{}" y1="{}" x2="{}" y2="{}" style="stroke-linecap:round;stroke:{};stroke-width:{};" />\n'.format(x1, y1, x2, y2, color, width)