- /// helper: solve for the columns in #curline#.
- void solve_line (Column_x_positions*) const;
-
- /// helper: approximate the energyv
- void approximate_solve_line (Column_x_positions*) const;
-
- /// does curline fit on the paper?
- bool feasible (Link_array<Paper_column>) const;
-
-
- Simple_spacer* generate_spacing_problem (Link_array<Paper_column>, Interval) const;