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• For properties that are objects composed of other properties (e.g. "SpatialTransform") a popup with a tree structure representation of the object is available by Selecting the ... Button next to "SpatialTransform".

In addition to the properties of the object, the editor shows two more (usually uneditable) entries in the table of properties:

• name: This is the name of the object being edited. In most cases the name is not editable, since other objects or tools often refer to the object by its name.
• type: This is an uneditable string with the name of the API class of the current object.

The Sockets group of properties show how the two "connections" needed to make the joint are satisfied:

• PhysicalFrame: child_frame is satsfied by the "pelvis" Body
• PhysicalFrame: parent_frame is satsfied by the "ground" frame.

The values shown for these Sockets are usually PathNames describing the location of the objects in the model's component-tree.

The output tab for a Body is shown on the left, it lists the built in quantities that are automatically computed for a "Body" along with the names and types.

• Names can be used to report the corresponding quantities either instantaneously or during Simulation or post-hoc using the OutputReporter.
• Every row has a corresponding data type to help explain the quantity it outputs computes and also because OutputReporter groups Outputs of the same datatype into one file/table.

Outputs were introduced in version 4.0 to simplify reporting quantities of interest froma model/simulation without the need to write customized analyses.