Move Interface Node

To make the display of a network containing instance nodes less cluttered it is often desirable to alter the ordering of the input nodes and/or output nodes (known as interface nodes) of the instance nodes so as to minimize the number of links crossing each other. An input node (output node) of an instance node can be moved one position to the left (right if the Shift key is pressed) simply by clicking an input node (output node) with the left mouse button.