READONLY -- Only allows you to read from the specified file.
READ/WRITE -- Allows read and write operation to an existing file.
If a write operation is performed, the data from
the write operation is appended to the file.
Writing to the file will not be allowed. Therefore,
you will not be able to direct reports to the file.
NEWVERSION -- A new file will be created with a higher version number.
If NEWVERSION is not specified, an existing file is used.
If the selected file does not exist, a new file will
be created whether or not NEWVERSION is specified.