Simple suggestion - to provide the facility to change/edit the Button Code of a Node in the Node Editor.
An example would be in a the case of changing the initial Node of a Design Line from Open End to Source. From the Design Line interface > Node drop down list >Edit, from the Node Editor dialog box, select the required node, and some sort of facility to change the Button Code. perhaps a RIGHT CLICK menu when the selection has been made.
In this case an Item which can be assigned a Button Code of SOURCE can then automatically fill when the initial button code of the Design Line has been edited to SOURCE.
