| Member | Description |
|---|---|
| Auto | The host program determines which naming system to use. |
| Mpe | Reflection uses traditional MPE filenames unless a name begins with a forward slash or a period, in which case the name is assumed to be a POSIX name. |
| MpeOnly | Reflection uses traditional MPE filenames, reporting any filename that begins with a forward slash or a period as invalid. |
| Posix | Reflection uses POSIX filenames. |