Voice_element* get_rest_element(String,String);
Command * get_bar_command(Real);
Staff * get_new_melodicstaff();
+void add_requests( Voice_element*v, svec<Request*>&req);
Command* get_meterchange_command( int,int);
Command* get_meter_command( Real,int,int);
Command* get_skip_command( int,Real);
+Command* get_key_interpret_command(svec<String>);
Request* get_request(char);
-void add_requests( Voice_element*v, svec<Request*>&req);
+Command*get_clef_interpret_command(String w);