
MSG LEFT BY: SALLY RIDE
DATE POSTED: 

INPUT VALUES. PREFIXES ARE ABBREVIATION
WHICH REPRESENT SPECIFIC DATA CATAGORIE
TO THE SYSTEM WHEN INPUT BY THE USER. 
AN EXAMPLE OF A PREFIX IS "TN"WHICH 
MEANS "TELEPHONE NUMBER". AN INPUT 
FORMAT DETERMINES THE NUMBER OF CHARAC-
TERS FOLLOWING A PREFIX AS WELL AS THE
PATTERN IN WHICH THESE MUST BE ENTERED.
FOR EXAMPLE, "TN XXX-XXXX" MEANS THAT 
THE PREFIX "TN" MUST BE FOLLOWED BY 
SEVEN CHARACTERS IN THE FORMAT SHOWN.
 
INPUT VALUES ARE THE ALLOWABLE DATA
ENTERED FOR EACH PREFIX IN THE CORRECT
INPUT FORMAT. AS MENTIONED IN THE 
PREVIOUS PARAGRAPH THE INPUT FORMAT
FOR THE PREFIX "TN" IS "TN XXX-XXXX"
THE FIRST THREE CHARACTERS (XXX) MUST
BE ALPHANUMERIC; THE LAST FOUR (XXXX)
MUST BE NUMERIC. SO, COSMOS WOULD CON-
SIDER AN INPUT OF "TN 935-2481" AS
VALID INPUT. BUT YOU *MUST* USE THE
CORRECT WIRE CENTER FOR THE (XXX) IN 
QUESTION. IN HACKING COSMOS PART 2
LEX WILL HAVE A LIST OF THE MOST 
COMMONLY USED PREFIXES, FORMATS AND
PREFIX CODE VALUES WHICH ENABLE YOU
TO READ AND UNDERSTAND COSMOS TRANS-
ACTIONS.
SALLY RIDE:::SPACE CADET
