The ADT command calls the Application Design Tool, an interactive
       aid that helps you define a domain, its associated record, and
       its data file. To invoke ADT, enter:

       DTR> ADT

       ADT has its own help files. You can get help at any time by
       entering a question mark (?). In addition, you can press:

                  PF2     -- for help on ADT's video display

                  !       -- to see the fields you have defined so far

                  <       -- to go back to the previous prompt

                  CTRL/Z  -- to exit ADT

       For more information on ADT, see the DEC DATATRIEVE Reference
       Manual.