In addition to editing the input parameters of a port of a node, you can also change a node's creation method by altering the current technique. For instance, it may be useful to switch from creating a Line ByPoints to ByStartPointDirectionLength. Instead of creating a new node and deleting the old node, you can switch the creation technique.

To do this, select the node and move the cursor on the Technique Selector (Select this node's technique) field, and click on the Technique list. It opens up the list of options, displaying all other available techniques for the node type. Now you can choose another technique and click to apply it. The input port parameters would change as per new technique and can be set to define the node.