Yes, if you use an enumeration you do change the DTD each time you add a network, but not the structure of the element. It's not the same error and it doesn't t

Yes, if you use an enumeration you do change the DTD each time you add a network, but not the structure of the element. It's not the same error and it doesn't tell you the same thing. It's obviously not very important... I can't seem to be able to put into words why it bothers me so much! ;-)