Commands to setup the file destination and format

• outdir [dir] Sets/gets the file output directory. Returns (string)
• fname [fn] Sets/gets the root of the output file name Returns (string)
• index [i] Sets/gets the current file index. Returns (int)
• enablefwrite [i] Enables/disables file writing. 1 enables, 0 disables. Returns (int)
• overwrite [i] enables(1) /disables(0) file overwriting. Returns (int)
• currentfname gets the filename for the data without index and extension. MYTHEN only. Returns (string)
• fileformat sets/gets the file format for data in receiver. Options: [ascii, binary, hdf5]. Ascii is not implemented in Receiver. Returns (string)