1151if (present(mode)) lmode=mode
1152
1153lformat="BUFR"
1154if (present(format)) lformat=format
1155
1156lsimplified=.true.
1157if (present(simplified)) lsimplified=simplified
1158
1159ier = idba_messages_open_input(session%sehandle, filename, lmode, lformat, lsimplified)
1160