open_lanfile

Source: hsio/open_lanfile.pro

 OPEN_LANFILE 
        Open a file for use by HSIO.

 Usage:
        open_lanfile, file, mode, findex, lrecl

 Arguments:
        file    String  input   The name of the file to open.
        mode    Long    input   Mode in which to open it (0 - read,
                                10 - write, 20 - append, 15 - write
                                compressed)
        findex  Long    output  Index by which other routines refer to this 
                                file.
        lrecl   Long    in/out  Length of maximum data record which file can 
                                hold.
 History:
        Native IDL version; 24/11/03: SJT