The Navigation Bar shown at the top of the work area is a helpful tool for navigating between Subsystems and shows the model in a contextual way for better comprehension.
To enter a subsystem, users can double-click the subsystem block displayed in the work area, or view the subsystems in one of the drop-down lists available in the Navigation Bar.
The 
icon opens the Model Browser, which views the entire model and its subsystem path.
The 
icon allows the user to view the sibling subsystems. In the example below, we see the children of the current subsystem which is Electric Car. It contains five subsystems, which can be clicked to navigate to.
The example below shows the Model Browser and the subsystem path changing. Here the user can jump back and forth around the selected subsystem path.
