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Performs an action on a UI (user interface) object, such as the button, menu item, link, etc.
Carry out action Specifies the action, it can be the following:
Set focus Sets the focus to the object.
Performs object's default action Carries out the default action of the object. Not all objects have a default action
Add object to the current selection Adds the object to the current selection. Not all objects support this operation.
Remove object from the current selection Removes the object from the current selection. Not all objects support this operation.