Primary Classification:
  K. Computing Milieux
  K.3 COMPUTERS AND EDUCATION

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.0 General

          Nouns: BITNET

  H. Information Systems
  H.1 MODELS AND PRINCIPLES
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.2 User Interfaces (D.2.2, H.1.2, I.3.6)
          Subjects: Training, help, and documentation

General Terms:
Documentation, Human Factors