A visual approach for specifying input/output (I/O) operations and watching them in different modes is presented. The discussion includes a brief overview of our system and an example of specifying I/O operations. In our approach, we allow a programmer to view a software component in any of the six different groups of views related to the different features of a component. Each group is supported by its own subsystem. One can make a part of a programming work in any of these subsystems. To make this work, each subsystem provides a few different modes. For example, the specification of I/O operations is just based on one of the subsystems and has three modes discussed in this paper. A special interface panel is provided for each mode and all specifications or programming will be done by mouse click operations only.