gh_double2scm (paper_l->get_var("bracket_arch_angle")),
gh_double2scm (paper_l->get_var("bracket_arch_width")),
gh_double2scm (paper_l->get_var("bracket_arch_height")),
gh_double2scm (paper_l->get_var("bracket_arch_angle")),
gh_double2scm (paper_l->get_var("bracket_arch_width")),
gh_double2scm (paper_l->get_var("bracket_arch_height")),