"DITTO" is an abbreviation for "Data Interfile Transfer, Testing and Operations Utility". It is a general-purpose utility program and can scan, display, list, alter, and create files or parts of files on card, tape, disk, ... devices.

You can run DITTO on z/OS, z/VM and z/VSE. In z/VSE DITTO is available as batch program and CICS transaction.

DITTO as a CICS transactions provides a 3270 full screen utility, that you can use from the z/VSE IUI user. Just press PF6 on the IUI "z/VSE Function Selection" panel. Now you have a CICS terminal and can enter the CICS transaction name "DITT" (or DITTO).

DITT (Online Ditto) starts a dynamic partition to provide the interfaces required by the functions you are using on your CICS screen. The DITT performance therefore depends on the priority of that partition and the workload of higher priority partitions.

At first the DITTO Task Selection Menu is displayed and you can use many DITTO function in full screen mode. Some function are also available in the IUI selection panels. Be careful when you change data.

  Process   View   Options   Help                                         
..........................................................................
 DITTO/ESA for VSE            Task Selection Menu                         
                                                                          
 Select the desired task or enter a DITTO function code, then press Enter.
 Press F2 (Menu) to display the menu panel with DITTO function groups.    
                                                                          
 _____  1. Browse data                                                    
        2. Edit or update data                                            
        3. Work with VTOC or label area                                   
        4. Work with VSAM catalog                                         
        5. Work with VSE libraries                                        
        6. Print data                                                     
        7. Copy data                                                      
        8. Locate data                                                    
        9. Change data                                                    
       10. Create data                                                    
       11. Position a tape                                                
       12. Tape specific functions                                        
       13. Set processing options                                         
                                                                                           

For details please see the DITTO User's Guide and Reference. It is locate in the IBM Publication Center - here.

DITTO comes with the z/VSE base tape / image.

Have a good weekend.