+ Item *internal_make_item (SCM sym, SCM cause,
+ char const *f, int l, char const *fun);
+ Spanner *internal_make_spanner (SCM sym, SCM cause,
+ char const *f, int l, char const *fun);
+ Paper_column *internal_make_column (SCM sym,
+ char const *f, int l, char const *fun);
+
+ /**
+ override other ctor
+ */
+ DECLARE_CLASSNAME (Engraver);
+ DECLARE_TRANSLATOR_CALLBACKS (Engraver);
+ Engraver ();
+};