A section view is a view that shows the internal parts of 3D bodies in a design. It looks as if you cut through an entire length of the design. You can use this view to look at and modify the internal parts of your model.
You can create a section view in just a few steps:
- Select the Orientation cube.
- Choose a plane in the Views tab. This is the section plane that you will use to “cut through” your 3D model. So, if you want to see the internal section of your 3D model from the top, select Top.
- Select
. 
- Select
to turn off the section view.
Look at this video to see how section view is used: