Indicates input/output mode. Can be one of three constants: ForReading, ForWriting, or ForAppending.
| Member | Value | Description |
|---|---|---|
| ForAppending | 8 | Open a file and write to the end of the file. |
| ForReading | 1 | Open a file for reading only. You can't write to this file. |
| ForWriting | 2 | Open a file for writing. If a file with the same name exists, its previous contents are overwritten. |