Let's start with some essential techniques...
1. To open up some additional screen space, collapse the Output bar by clicking the Output Bar button:
2. To rotate the model, press Shift and the middle mouse button, and move the mouse:
3. To zoom, roll the scroll wheel:
4. To pan (move), hold the middle mouse button, and move the mouse:
5. To see the occupant, hide the wall part and then the air part. To do this, position the curser over each, press Ctrl and the middle mouse button:
Hide the wall:
Hide the air:
Now we can see the occupant!
6. To show all the parts, press Ctrl and middle click off the model in the graphics window:
In the next steps, we use these techniques to navigate the model and to control part visibility.