_cinemas_file = f.optional_string_child("CinemasFile").get_value_or (path ("cinemas.xml").string ());
_show_hints_before_make_dcp = f.optional_bool_child("ShowHintsBeforeMakeDCP").get_value_or (true);
_kdm_filename_format = dcp::NameFormat (f.optional_string_child("KDMFilenameFormat").get_value_or ("KDM %f %c %s"));
_cinemas_file = f.optional_string_child("CinemasFile").get_value_or (path ("cinemas.xml").string ());
_show_hints_before_make_dcp = f.optional_bool_child("ShowHintsBeforeMakeDCP").get_value_or (true);
_kdm_filename_format = dcp::NameFormat (f.optional_string_child("KDMFilenameFormat").get_value_or ("KDM %f %c %s"));