SHIP:Data Types:Node

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Reference

Data Type	Description
Reference	Reference to a node or one of its properties.

Properties and parameters that are of type Reference must receive a value that is known at SHIPTide time, not a value that is dynamically assigned at run time. For example, the following statement will fail:

getChildIndex(getChild(myParent, index));    // fails instead of returning index

The above code is illegal since getChildIndex expects a Reference to a node but getChild returns the node itself.