Your normal SAS program will read a file and output data to the printer or results window.  In many files you will run across a record (observation) that doesn't print right or something is strange in the data from that record.   Say its the 101th record, you will want to code If _n_=101 then put _all_;    This will show all your fields with their field names in the log for you to debug.  You can also code  If name="Degeneras" then _error_;   This will show the raw data record as well as the fields and field names. ... View more