model.extraDim().create(<tag>, type) creates an extra dimension feature of the given type. The supported types are AttachDimension, PointsToAttach, and Integration.model.extraDim(<tag>).set(property,<value>) specifies properties relevant for the selected extra dimension feature type.
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• PointsToAttach has no properties.
• model.extraDim(<tag>).model(<mtag>) sets the model node. For features of type AttachDimension, this defines the base model node. For features of type PointsToAttach and Integration, this defines the extra dimension model node.model.extraDim(<tag>).selection("point") returns the selection of points to attach (for features of type PointsToAttach).model.extraDim(<tag>).properties() returns the list of assigned properties as a string array.model.extraDim(<tag>).getType(property) returns the value of the specified property.model.extraDim(<tag>).model() returns the model node.