void warning (String)const;
void programming_error (String)const;
void set_elt_pointer (const char*, SCM val);
friend class Property_engraver; // UGHUGHUGH.
void warning (String)const;
void programming_error (String)const;
void set_elt_pointer (const char*, SCM val);
friend class Property_engraver; // UGHUGHUGH.