At this point we have all the control module classes and equipment module classes we need for the application. In earlier exercises, we created unit classes (COLOR, BASE, and BLENDER) to hold the control modules and equipment modules for the color tank units, base unit, and blender units. Now we will add the required module classes to these unit classes. The easiest way to do this is to drag the control module class (or equipment module class) to the unit class and then rename the resulting module blocks to more meaningful names. Note that when you rename the module block, the associated alias is also renamed.
