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STANDARD RADIO FEATURE KNOWN AS DTMF MEMORY TO STORE LONG STRINGS OF CALL
SIGN DATA.  THIS MADE COMMUNICATION TIME QUICKER BY NEGATING THE NEED TO
TYPE OUT LONG CALL SIGN STRINGS.  HOWEVER, THIS FEATURE WAS NOT STANDARD TO
EVERY RADIO, SO A COMPETING SOLUTION TO SOLVE THE LONG TRANSMIT TIMES WAS
MACRO CONFIGURATION.  IN COMPUTER TERMS, A MACRO IS A SERIES OF CODES THAT
CORRESPOND ONE SHORTER OPERATION TO ANOTHER.  IN THIS CASE, WITH A LIMITED
NETWORK OF APRS USERS, THE MACRO 1 COULD CORRESPOND TO THE CALL SIGN N2WU,
WHILE 2 COULD CORRESPOND TO K2GOG, AND SO FORTH.  APRSTT IMPLEMENTATION
WHEN LOOKING AT THE LARGE AMOUNT OF TRIATHLON DATA, THE USMA AMATEUR RADIO
CLUB AND THE HVDN REALIZED THAT MACROS WITH APRSTT COULD SIMPLIFY AND SPEED
UP RACE REPORTING.  THE CLUBS COULD EFFECTIVELY RELAY RACE INFORMATION OVER
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