The level of detail must be attuned to the purpose of the model and the intended
stakeholder. A new user’s initial focus may be the system as a whole, with few
details. When the user focuses on a specific part of the model, more detail should be
added. When users can zoom in on parts of a model, navigational information
becomes important: users should be provided with awareness information regarding
the current level of abstraction and switching between levels of abstraction should
be supported. Additionally, the meaning of the symbols at the given level of
abstraction should be stated.