• A CSS cursor value carrying the tool's glyph, for the canvas while that tool is armed.

    The glyph is drawn twice: once in halo, one pixel wider on each side, and once in color on top, so it reads on a light chart and a dark one without the host choosing per theme. The value is url("data:image/svg+xml,...") x y, fallback, ready for canvas.style.cursor.

    Parameters

    Returns string