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Reading part of a data file: OBS=
The OBS= option can be used anytime a user wants to read only a part of their raw datafile. It tells SAS to stop reading input when it gets to that line. This does not necessarily correspond to the number of observations (i.e., 2 data lines for each observation would yield 50 observations when OBS=100 is set in the infile statement.)DATA race; INFILE '/usr/shared/sb/white.dat' OBS=100; INPUT age sex ...