... into subdialogues which appeared to be the execution of a plan to satisfy a goal of the user or the adviser on the basis of the task structure. In addition to segmenting the dialogue into ... restrictions on the mcta-plans available to the participants when unable to solve the problems. The participant, the adviser sitting to his/her right, and the console were videotaped. Coding of the Dialogues ... In such case, the operators will reflect the specifics of the task environment, such as, vectors, matrices, screen, keyboard. The finer the grain of analysis, the more the operators are associated...