NodeHelper is a useful tool for PART developers and people like me who use existing models to create new parts. You can add, remove, and edit the nodes of a part to see how things will fit together, then output your new values to cut-and-paste into the real CFG file. Reload KSP and see your new part nodes in action! This is also very useful for fixing old parts that don't have their node connection directions set correctly. One click of a button and your old parts will connect again! D
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