Operations on the project model

After all component models are defined we obtain the complete model of the project Body Spring Damper Problem as shown below. The changes made with respect to the previous model are seen in the model tree as well.  Now Wall, Spring, Damper and Body are represented by the storage icons, which serves as the branches of the model tree (see in the figure below on the left). 

The complete project model with all components closed
Project ModelIf we expand a component branch (by clicking ‘+’ icon) the corresponding document will open in the center. Thus, e.g. if we expand Body branch its model opens in the center as shown below. Similarly, by collapsing the branch (clicking ‘–‘ icon) the corresponding document windows closes as well. Thus, we may use the model tree to open or close the components (the model branches).

The project model with expanded Body branch 
Project Model