I do not feel you have any room to say what is appropriate use, as you did not even know how to fully use isin. I think it would be the place of someone who knows the full use of the commands to say such not people that do not know how to use isin fully. besides the appropriate way is to break each raw up and halt each one. there for you way is less appropriate by your standers as well, along with Deans and many other ways you could do this. you can stand your ground and be redundant all you wish. Tho may I add have you fully test this to prove its not the best for this use? as I only seen you say any thing bad about using it. every one else seems not to have a problem