A  SAVESET  CONTAINING  ONE  LOGICAL-DISK  FILE

        +---------------------+
        |  SAVESET DIRECTORY  |<------ SAVESET FILE WITH DIRECTORY
        +---------------------+            (accessible by BUP)
        |  +---------------+  |      
        |  |   DIRECTORY   |<-+------- LOGICAL-DISK FILE   
        |  +---------------+  |        WITH OWN DIRECTORY  
        |  |     FILE1     |  |        (this directory is 
        |  |     FILE2     |  |         not visible to BUP)
        |  |     FILEn     |  |                          
        |  +---------------+  |      
        +---------------------+


A  SAVESET  CONTAINING  SEVERAL  LOGICAL-DISK  FILES

        +---------------------+
        |  SAVESET DIRECTORY  |<------ SAVESET FILE WITH DIRECTORY
        +---------------------+
        |  +---------------+  |      
        |  |   DIRECTORY   |<-+------- LOGICAL-DISK FILE   
        |  +---------------+  |        WITH OWN DIRECTORY  
        |  |     FILE1     |  |        
        |  |     FILE2     |  |                            
        |  |     FILEn     |  |                          
        |  +---------------+  |      
        |                     |
        |  +---------------+  |      
        |  |   DIRECTORY   |<-+------- LOGICAL-DISK FILE            
        |  +---------------+  |        WITH OWN DIRECTORY           
        |  |     FILE1     |  |                                     
        |  |     FILE2     |  |                                     
        |  |     FILEn     |  |                                     
        |  +---------------+  |                                     
        |                     |
        |  +---------------+  |                                     
        |  |   DIRECTORY   |<-+------- LOGICAL-DISK FILE            
        |  +---------------+  |        WITH OWN DIRECTORY 
        |  |     FILE1     |  |
        |  |     FILE2     |  |
        |  |     FILEn     |  |
        |  +---------------+  |
        +---------------------+