>>-+------------------------------------------+----------------->
   +-+-BACKUPCONTROLDATASET-+-----------------+   
   | +-BCDS-----------------+                 |   
   | '-BACKUP---------------'                 |   
   | .-MIGRATIONCONTROLDATASET-.              |   
   +-+-MCDS--------------------+--+---------+-+   
   | '-MIGRAT------------------'  '-SUMMARY-' |   
   '-BOTH-------------------------------------'   

>--+----------------+--| fragment A |--------------------------->
   '-INCLUDEPRIMARY-'                   

>--+---------------------------------------------------+-------->
   '-SELECT--(--+---------------------------------+--)-'   
                +-AGE--(--mindays--+---------+--)-+        
                |                  '-maxdays-'    |        
                +-+-MIGRATIONLEVEL1-+-------------+        
                | '-ML1-------------'             |        
                +-+-MIGRATIONLEVEL2-+-------------+        
                | '-ML2-------------'             |        
                +-VOLUME--(--volser--)------------+        
                +---RETAINDAYS--------------------+        
                '---ACTIVE------------------------'        

>--+---------------------------+-------------------------------><
   +-+-SMALLDATASETPACKING-+---+   
   | '-SDSP----------------'   |   
   +-+-NOSMALLDATASETPACKING-+-+   
   | '-NOSDSP----------------' |   
   '-+------+------------------'   
     '-VSAM-'