Property :: positioned - Is instance positioned

The property returns whether there is an instance located and selected (true) for the property handle or not (false). When the property handle refers to an attribute with a parent property handle it returns the positioned state of the parent instance.

When an instance has been provided using the initializeInstance() function, the property handle is not positioned (but selected). For checking whether an existing or new instance is selected or not, selected() might be called.

The property throws an exception, when the property handle is not valid.