ISO 7816 [part 1] [part 2] [part 3] [part4] [section..1 2 3 4 5 6 7 8 9 annex.. A B C D E F]

4. Abbreviations and Notation

For the purposes of this part of the ISO/IEC 7816, the following abbreviations apply :

APDU	Application protocol data unit
ATR	Answer to reset
BER	Basic encoding rules of ASN.1 (see annex D)
CLA	Class byte
DIR	Directory
DF	Dedicated file
EF	Elementary file
FCI	File control information
FCP	File control parameter
FMD	File management data
INS	Instruction byte
MF	Instruction byte
P1-P2	Parameter bytes
PTS	Protocol type selection
RFU	Reserved for future use
SM	Secure messaging
SW1-SW2	Status bytes
TLV	Tag length value
TPDU	Transmission protocol data unit

For the purposes of this part of ISO/IEC 7816, the following notation applies :

< TR>

'0'-'9' and 'A'-'F'	The sixteen hexadecimal digits
(B1)	Value of byte B1
B1||B2	Concatenation of bytes B1 (the most significant byte) and B2 (the least significant byte)
#	Number