Thirteen students enrolled. The availability of better tools is the probable reason for the improvement. As is typical of student projects, however, only a few were fully functional and robust. Brief descriptions of the student projects, together with representative images, follow. The MT Icon Interpreter , Clinton L. Jeffery, Icon Project Document IPD169, Department of Computer Science, The University of Arizona, 1992.
Structures are color coded and shown by bars whose lengths are proportional to size.
Clicking on a bar brings up another window with a subset of the functionality of the main window. There, the values in the structure are shown. Clicking on a value brings up another window, and so on. When a procedure is called, the vine branches. Objects start out as flowers and develop into fruit as they are used by the program.