Primary Classification:
  D. Software
  D.2 SOFTWARE ENGINEERING
        D.2.10 Design**
            Subjects: Methodologies**

Additional Classification:
  H. Information Systems
  H.1 MODELS AND PRINCIPLES
      H.1.2 User/Machine Systems
          Subjects: Human factors
  H.4 INFORMATION SYSTEMS APPLICATIONS
      H.4.1 Office Automation
          Subjects: Spreadsheets

  J. Computer Applications
  J.2 PHYSICAL SCIENCES AND ENGINEERING
      Subjects: Engineering
  J.6 COMPUTER-AIDED ENGINEERING
      Subjects: Computer-aided design (CAD)

  K. Computing Milieux
  K.3 COMPUTERS AND EDUCATION

General Terms:
Design, Human Factors