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data list free / product sales .
begin data
1 23  1 45  1 23  1 44  2 34  2 67  3 45  3 78  4 56  4 56
end data .


DATA LIST LIST /index(F8) var1(F8) var2(F8) var3(F8).
BEGIN DATA
2 1 1 9 
1 2 2 4 
5 3 6 9 
4 4 7 2 
3 4 8 3
END DATA.
LIST.

**********************.
DATA LIST LIST /id(F8) date1(ADATE) test(F8).
BEGIN DATA
1 10/1/99 1
1 11/2/99 2
1 12/12/99 2
2 1/1/99 1
2 2/1/99 3
3 3/1/99 1
END DATA.
LIST.