We only needed to make this one determination. Today, we need to determine the more comprehensive view of how a room is being used. Let me start with an analogy. The rooms in your house are used for sleeping, eating, cooking, watching TV, whatever. This is room usage.
People frequently watch TV and eat in the same room for example.
It can get complicated. You must become familiar with these definitions. We ll go over them in a minute. Here s another example. We have Professor Jones.