According to Levy (1997:178), a tutor-tool framework is offered as a mechanism for addressing a number of concerns in CALL, the most far-reaching being the belief that all CALL is of the computer evaluates the student input and the presents the new material accordingly.
What do you think about this model already invented by that time? Do you think that now in the 21 century, this CALL can be seen easily in a CALL context? Could you give any example? Could find any information on the Internet to know more about this topic?