*Note 1: An item in the upper level should be broken into more than two subordinate concepts. A one-to-one 
 relation (see NG1 of Fig.3-6) indicates that the breakdown simply represents paraphrasing. 
*Note 2: If breaking down into two or more subordinate concepts is difficult or almost impossible, it may be an indication that the analysis object is more suited to job breakdown procedures rather than to target analysis.