add additional jump function?
the function "end" , and "home"/ "pos1" are one of the most often used keys. Especially combined with copy and paste.
My suggestion to improve it and avoid "ctrl + c" -> "end" -> endless backscrolling (if the starting point of the copied part isn´t in the anterior part of the score) is / are additional "jump" keys /shortcut for p.e. "jump back to the begin of the copied field" or "back to the last screen" ... (maybe shift/ctrl + home/end?)
(just a thought which came up right atm because of a pretty long score and annoying back scrolling.)