Real ideal = base.distance () - increment + left_head_end;
Drul_array<Skyline> skys = Spacing_interface::skylines (me, right_col);
Real distance = skys[LEFT].distance (skys[RIGHT], robust_scm2double (right_col->get_property ("skyline-vertical-padding"), 0.0));
Real ideal = base.distance () - increment + left_head_end;
Drul_array<Skyline> skys = Spacing_interface::skylines (me, right_col);
Real distance = skys[LEFT].distance (skys[RIGHT], robust_scm2double (right_col->get_property ("skyline-vertical-padding"), 0.0));