If you open a model created in the 3.5a version of COMSOL Multiphysics, one Composite Object node (

) appears for each nonprimitive geometry object in the model. The
Composite Object node contains the follow sections:
If you save the model as a .java file, COMSOL uses the filename specified in the
Filename field to determine the path to a geometry file, containing the geometry object, that appears together with the
.java file. The software uses this geometry file when you run the resulting
.java file. By default, the filename has the prefix $FILENAME$. If the filename starts with this prefix, COMSOL stores the geometry file in the same directory as the
.java file. It is also possible to remove this prefix and specify the full path to the geometry file.
Select the Resulting objects selection check box to create predefined selections (for all levels — objects, domains, boundaries, edges, and points — that are applicable) in subsequent nodes in the geometry sequence. To also make all or one of the types of resulting entities (domains, boundaries, edges, and points) that the object consists of available as selections in all applicable selection lists (in physics and materials settings, for example), choose an option from the
Show in physics list:
All levels,
Domain selection,
Boundary selection,
Edge selection, or
Point selection. The default is
Domain selection, which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose
Boundary selection. These selections do not appear as separate selection nodes in the model tree. Select
Off to not make any selection available outside of the geometry sequence.