Machine/user conversation windowing.

摘要

A processing system with a display and input user interface prompt the user through a sequence of computer program input procedures for the execution of a computer program. Each of the input procedures requires the user to designate input data. A first window including a prompt message to the user for the user to designate input data is displayed and, when the user designated input data is received from the input device it is added to the display and is used to select for display, a second window on a second portion of the display including a second prompt message to the user for the user to designate additional input data while continuing to display at least a portion of the first window illustrating the first prompt message and the designated input data, and so on. The user input data and window specifications are saved. If the user requests an undo function requiring the previously executed processing to back-track to a chosen existing window, all the windows back to the chosen window, together with the user input to that chosen window are removed from the display by regeneration from the saved data and the saved data relating to what has been removed only is reset, whereafter processing is resumed from that point.