+---------+----------+  
| W.NAPR  |  W.NID   |  0
+---------+----------+  
|       W.NBAS       |  2
+--------------------+  
|       W.NSIZ       |  4
+--------------------+  
|       W.NRID       |  6
+--------------------+ 
|       W.NOFF       | 10
+--------------------+ 
|       W.NLEN       | 12
+--------------------+ 
|       W.NSTS       | 14
+--------------------+