question: is called by the main application to give a reference back to itself . concode_field_sep MainApp mainApp concode_field_sep void handleSave concode_elem_sep void handleAbout concode_elem_sep void handleOpen concode_elem_sep void handleSaveAs concode_elem_sep void handleExit concode_elem_sep void handleShowBirthdayStatistics concode_elem_sep void handleNew
target: void function ( MainApp arg0 ) { this . mainApp = arg0 ; }