Cutplanes
A cutplane is a display option that creates a plane at a designated location that cuts through an object to create a sectional view. Create multiple cutplanes to create a sectional view that exposes inner details that would otherwise not be visible from outside the model.
On the 3D View
                        context tab, on the Display Options tab, in the
                            Cutplanes group, click the 
 Create icon.

Figure 1. A simple example of a cutplane preview. The cutplane cuts through a larger sphere revealing a smaller sphere inside.
The operation of the cutplane can be reversed, hiding the visible region and showing the invisible region. On the Create/Modify Cutplane dialog, select Flipped, or in the tree, from the right-click context menu for the cutplane, click Flip cutplane.
To activate/deactivate a cutplane, click the icon for the cutplane. To modify, select the label.
Filter Cutplanes
When more than one 3D view is used, the already active cutplanes can be modified on a per-view basis using the Filter tool.
On the 3D View context tab, on the
                            Display Options tab, in the Cutplanes group, click the 
 Filter icon.

Figure 2. The Filter Cutplanes dialog.