Deference between points Plug wires, and electronic plug wires?????

Can any one tell me the deference between points ignition plug wires and electronic ignition plug wires?? I was wanting to get a set of the restoration plug wires for my dart, but Year One states that there are "only for points type ignition". And I have electronic ignition. I sure do not see what the deference would be, but maybe I am missing something?? When I converted to electronic I did not change the plug wires and it worked just fine. Thanks for any input!