parid0046 | Sun, 19 Jan 2003 16:17:10
There are four arc types, named "AT", "AC", "CR", and "Cx". The significance of each type of arc is different.
There are different four arc types, named "AT", "AC", "CR", and "Cx".
         
If they did not have different significance there would be no reason to mention them. Just say they are different, then explain how, which the draft already does.
—pdurusau@emory.edu