Visual linking based on expressions is used to quickly make a connection between nodes or inputs without having to manually set expressions through the Expresso Calculator. You can link simple or structured inputs. Linking structured inputs links individual inputs in a single operation. Its purpose is to quickly define a link between two attributes. It does so by defining a B=A expression, B being the link target and A the link source.
You can visually link attributes within the Tool UI, in the Composition Browser or between the Tool UI and the Composition Browser. However, visual linking of structured inputs can only be done through the Composition Browser.
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