Windows and doors are just a subset of the possible components that can be created using Revit. Revit allows you to design, create, and place just about any kind of component you can dream up. The predefined categories of component types include everything from casework to structural framing. Components are a bit more flexible than windows and doors in that they are not required to be hosted by a wall in order to exist in the model. A piece of furniture, for example, does not need a wall in order to be placed. At the same time, you can design components with the same dependency as windows or doors. For example, with a wall-mounted light fixture (Figure 4.15), You'd expect it to move with the wall and get deleted with the wall just like a window or door would. Revit allows for this flexibility when designing components.

Figure 4.15: Wall-mounted light fixture

To place components, use the Component tool in the Modeling tab of the Design bar. You can also drag and drop components from the Families node in the Project Browser.

When placing components, you'll get helpful snapping and alignment graphics. Pressing the spacebar before placing a component will rotate it.