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    1 Introduction
 
    An Introduction to the design model.
 
    2 Design-Model Hierarchy
 
    This section presents the design packages hierarchically, explains the dependencies among them, and shows the content
    of each package recursively.
 
    If the model has several levels of packages, those at the top-level are presented first. The packages within these are
    presented next, and so on, all the way down to the packages at the bottom of the hierarchy. For each package include:
 
    - 
        Its Name.
    
 
    - 
        A Brief Description.
    
 
    - 
        A list of the classes owned by the package, including the name and a brief description of each class.
    
 
    - 
        A list of the relationships owned by the package, including the name and a brief description of each relationship.
    
 
    - 
        A list of the packages directly owned by the package, with each package presented in the same hierarchical manner
        as above.
    
 
 
    3 Diagrams of the Design Model
 
    The diagrams, primarily class diagrams, of the entire design model are included here. Note: These diagrams are not
    related to the design use-case realizations or the architectural views of the model.
  
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