The repeats counter will not work in some cases and that is why we went this route. Some of our arrangements have solo sections within the whole score but we do not want to repeat the whol score, which is what the standard counter counts. While we are soloing each guy wants to see how many times he has played (e.g. 1-3) and then the next soloist takes over (e.g. 4-6) etc. When all are done, we loop back to the head etc. It saves a lot of writing, especially since we have that global limit on the total # of measures.