def closestPointOnSegment1(p = "const %(Vector)s&",
                           a0 = "const %(Vector)s&",
                           a1 = "const %(Vector)s&",
                           result = "%(Vector)s&"):
    """Find the point on a line segment (a0,a1) closest to point (p).
This version return True if the closest point on the line is bounded by the segment, and False otherwise."""
    return "bool"