In the Mac OS, the full path is file:/volume/folder/filename for local and remote files.
If you specify the context for the current calculation, this function will be evaluated based on that context; otherwise, it will be evaluated based on the context of the current window.
Returns file:/driveletter:/databaseName for local files in Windows.
Returns file://volumename/myfoldername/databaseName for remote files in Windows.
Returns file:/path/databaseName for local and remote files in the Mac OS.
Returns fmnet:/networkaddress/databaseName for FileMaker Pro networked files.