Depends on what you mean by partial section. If you are trying to make a view with a partial cutout you could create your cutting plane to show only the area of the part you want sectioned. Then create a view of the part corresponding to the section, shorten the view to hide the part shown by section, and align the two views. Manually draw a cutting line where the two views meet. Tedious, but it can be done and is still connected to the part.
