Object nodes

Actions operate on objects and are used by objects. These objects either initiate an action or are used by an action. Normally, actions specify calls sent between the object owning the activity diagram (which initiates actions) and the objects that are the targets of the actions. An object node represents an object passed from the output of the action for one state to the input of the action for another state.
Note: An object node can only be a leaf element; its meaning cannot contain other elements.

As with other states, only one object node can have the same name in the same parent state.


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