. (
(Y-offset-callbacks . (,Hara_kiri_group_spanner::force_hara_kiri_callback))
(Y-extent-callback . ,Hara_kiri_group_spanner::y_extent)
- (remove-first . #f)
(axes . (1))
(meta . ((interfaces . (axis-group-interface
vertically-spaceable-interface hara-kiri-group-interface