Primary Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.2 User Interfaces (D.2.2, H.1.2, I.3.6)
          Subjects: User interface management systems (UIMS)

Additional Classification:
  D. Software
  D.1 PROGRAMMING TECHNIQUES
  D.2 SOFTWARE ENGINEERING
      D.2.2 Design Tools and Techniques
          Subjects: User interfaces
  D.3 PROGRAMMING LANGUAGES
      D.3.2 Language Classifications

          Nouns: Ada
  D.4 OPERATING SYSTEMS
      D.4.7 Organization and Design
          Subjects: Real-time systems and embedded systems

  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.6 Methodology and Techniques
          Subjects: Interaction techniques

General Terms:
Design, Languages, Theory