
NAME
	f   - select or open a file
	
SYNOPSIS
	f [OPTION]

OPTIONS
	/ - select root file (3f 00)
		<byte>.<byte>
		<byte> <byte> - select file designated by
						these two bytes

DESCRIPTION
	The command establishes logical pointer to a specific 
	file in smartcard's file system. Once the file is 
	selected by this command,any subsequent file manipulation
	commands (access, read) will operate on the file pointed 
	to by this logical pointer.The location of the file is 
	designated by file identifier (the two bytes - OPTION) 
	which is:
		DF name (string of bytes identifying the DF);
		path (concatenation of file identifiers);
		short ID.

NOTE
	if entered no option:
	    and the pointer has not been previousely set,
		pointer gets set to the address of root DF file;
	    and the pointer has been previousely set,
		pointer remains pointing to the same file as before;
	if entered an invalid file OPTION 
	  "file not found"
	  message is displayed. Pointer gets set to input value;
	if entered a correct file OPTION
	  "OPTION: 90 00 ok"
	  message is displayed and pointer gets set to the input value.

EXAMPLES
	The following command selects "3f 00" file (DF):
                     you  type-> f 3f.0
             positive response-> 90 00 ok
             negative response-> 6a 82 file not found
             negative response-> scwrite failed
	     negative response-> 6d 00 unknown instruction
