• Hide Full Name specifies that only the Name of the Basic Type is displayed, that is, it is not prefixed by any scoping Packages.
If you opened the View Options by right-clicking the diagram background, the check boxes you select set the default view options for any Basic Types that are added to the diagram there after.
If you opened the View Options by right-clicking one or more selected Basic Types, the check boxes you select change the view options of those items only.