In many Nokia devices a number of directories are designated for specific tasks. For instance, a camera device stores captured photos in a specific "images" directory. To make it easier to access those directories, Nokia devices implementing the FC API contain additional system properties to locate them.
The existence of these properties cannot be taken for granted since not all devices have the need for them. You should take care of noting when the property is null and find an alternative.
It is strongly recommended that instead of using a generic non-localized name for a directory, you should use properties returning the localized names of common directories to make the MIDlet look consistent with the rest of the device UI.
For the system properties that return the localized names of common directories, see FC API implementation notes.