# The Structure Pane

The Structure pane displays a structural analysis of the currently selected object in your open project.

For example, if you select an Entity Object, the Structure pane will show you structural information about that object, such as:

- The files that make up the object, usually a `.xml` and a `.java` file

- The attributes of the object

- The keys that constrain the object

This structural analysis is displayed in the form of a hierarchical tree, much like a table of contents for the file.

### Structure Icons
| Project
| Connection
| Java File
| XML File
| Entity Attribute
| Entity Constraint
| View Attribute
| Association End Attributes
| View Object Members
| View Link Members
| Application Module Members

Some of the objects have a context-sensitive menu that allows you to perform appropriate operations on the corresponding underlying object. Others allow you to select the object for viewing in the Viewer pane.

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