% Knot 4_1d (DHF, based on Wikipedia)
 % adjusted with knotadjust.f
 % shortened with knotshorten.f
% calculated with knotadjust.f
% lines  a_x(j) b_x(j)  a_y(j)  b_y(j)  a_z(j)  b_z(j)
% corresponding to  x(s) = sum_ja_x(j)cos(js))+b_x(j)sin(js)  etc
    0.000000    0.000000    0.000000
    0.000000   -0.224010    0.251151    0.000000    0.000000    0.000000
    0.000000    0.000000    0.000000    0.000000    0.000000    0.087741
    0.000000    0.270501   -0.291798    0.000000    0.000000    0.000000
    0.000000    0.000000    0.000000    0.000000    0.000000   -0.125769
    0.000000    0.043184   -0.023667    0.000000    0.000000    0.000000
    0.000000    0.000000    0.000000    0.000000    0.000000   -0.051850
    0.000000   -0.015688   -0.031008    0.000000    0.000000    0.000000
    0.000000    0.000000    0.000000    0.000000    0.000000   -0.019038
    0.000000    0.005270   -0.016850    0.000000    0.000000    0.000000
    0.000000    0.000000    0.000000    0.000000    0.000000   -0.013303