The results of this code during run time
The above code has the following effect at run time:

Code                        effect  
INPUT                       read the next record  
      @1                    go to column 1  
          ID       3.       read the next three bytes, convert it to a number, store into ID  
      @5                    go to column 5  
          GENDER  $1.       read the next byte, store into GENDER  
      @7                    go to column 7  
          AGE      2.       read the next two bytes, convert it to a number, store into AGE  
      @10                   go to column 10  
          HEIGHT   2.       read the next two bytes, convert it to a number, store into HEIGHT  
      @13                   go to column 13  
          DOB      MMDDYY6. read the next six bytes,   
                            convert it to a number using the MMDDYY6. informat,   
                            store into DOB  
      ;                     execute the next sas statement  
There is no "next" statement. So, SAS is at the bottom of the data step; output of the PDV to disk occurs automatically.