Thank you. I just copied and pasted your code to a new sketch to run it. I see how you set up the displays. I will type it out later and maybe some of the method will stick in the ol' brain. It brought my "S" back. I was afraid if I cleared an entire line at a time it would cause flickering across the whole line. But not so in this case. I am going to study it more and try to see just what exactly is going on and why that one works.
I also have an idea to get the Saved Measurements menu to index backwards below the starting point where it first entered the menu. It might be sloppy code I don't know. But I am trying to learn. I have an idea. I will post the newest code again after I fiddle with it some. Hopefully a cleaner method hits me while I am at work today. Sometimes that happens. Walk away and things get more clear.
I thought this would be an easy first time project. At least I am learning a little something beyond blink an onboard LED.