Message        Was the 'case' keyword omitted  Within a switch
                statement, "<label>" defines an unreferenced label
                that matches an enumeration constant.

 Description    This user label has been defined, but there are no
                references to it.  As the label is defined inside a
                switch statement, and the label name matches an
                enumumeration constant name, there is a chance you
                intended this to be a case label.

 User Action    Remove the label or add the 'case' keyword before it.