input_filespec

    OpenVMS usage:char_string
    type:         character-coded text string
    access:       read only
    mechanism:    by descriptor-fixed-length string descriptor
    The name of the file to be converted. The input_filespec argument
    is the address of a string descriptor pointing to the name of the
    file to be converted.

 output_filespec

    OpenVMS usage:char_string
    type:         character-coded text string
    access:       read only
    mechanism:    by descriptor-fixed-length string descriptor
    The name of the file that receives the records from the input
    file. The output_filespec argument is the address of a string
    descriptor pointing to the name of the file that receives the
    records from the input file.

 fdl_filespec

    OpenVMS usage:char_string
    type:         character-coded text string
    access:       read only
    mechanism:    by descriptor-fixed-length string descriptor
    The name of the FDL file that defines the output file. The fdl_
    filespec argument is the address of a string descriptor pointing
    to the name of the FDL file.

 exception_filespec

    OpenVMS usage:char_string
    type:         character-coded text string
    access:       read only
    mechanism:    by descriptor-fixed-length string descriptor
    The name of the file that receives copies of records that cannot
    be written to the output file. The exception_filespec argument is
    the address of a string descriptor pointing to this name.

 flags

    OpenVMS usage:mask_longword
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Flags (or masks) that control how the fdl_filespec argument is
    interpreted and how errors are signaled. The flags argument
    is the address of a longword containing the control flags (or
    mask). If you omit this argument or specify it as zero, no flags
    are set. If you specify a flag, it remains in effect until you
    explicitly reset it in a subsequent call to a CONVERT routine.

    The flags and their meanings are described in the following
    table:

    Flag             Function

    CONV$V_FDL_      Interprets the fdl_filespec argument as an FDL
    STRING           specification in string form. By default, this
                     argument is interpreted as a file name of an FDL
                     file.
    CONV$V_SIGNAL    Signals any error. By default, the status code
                     is returned to the calling image.

    By default, an error status is returned rather than signaled.