+ Spanner * valign_;
+ bool qualifies (Grob_info) const;
+public:
+ TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
+protected:
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_music ();
+ virtual void finalize ();
+};
+
+Vertical_align_engraver::Vertical_align_engraver ()