Source : Free On-Line Dictionary of Computing

Interactive System Productivity Facility
     
         (ISPF) Something to do with {IBM}'s
        {OS/390}.
     
       
     {(http://www.s390.ibm.com/bookmgr-cgi/bookmgr.cmd/BOOKS/ISPDGD02/COVER?SHELF=ISP5BK01)}.
     
        [Summary?]
     
        (1999-07-14)