/* offsets */
void translate_axis (Real, Axis);
Real relative_coordinate (Grob const *refp, Axis) const;
+ Real parent_relative (Grob const *refp, Axis) const;
Real pure_relative_y_coordinate (Grob const *refp, int start, int end);
Real maybe_pure_coordinate (Grob const *refp, Axis a, bool pure, int start, int end);