I agree, which is why I have found a solution that works for me. I use two scripts, one for blocking notation and one for calling the show. I then have a "Script Notes Page" that I print on the back of every page in my blocking script that has sections for blocking notes, costume notes, light and sound notes, etc. with a diagram of the stage and that sort of thing. I do my blocking by numbers. For example, wherever the blocking takes place on the script, I will assign a number beggining with 1. Then on my Script Notes Page, I will write 1. and list the blocking notes. This way, if something is moved or changed then all I have to do is fix the number on my script and it stays neat. I also use odd numbers to assign blocking notes, so that I have at least one number in between in case something else is added. I've found that this works best for me.