; spline s -b -i i       ss11
; points along a symmetric curve
            0.7         1.60345
            1.3         2.47824
            1.7         3.26601
            2.4         5.24285
            3.8          14.079 " "
            5.2          14.079
            7.3         3.26601
            8.2         1.72686 ""
