Now you can free your ctrl + D

We will not be cautious any more while we use [ctrl+d] to make  multiple
selections. we can use the [ctrl+alt+d] to save the points and
selections now, and use [ctrl+alt+enter] to restore all of it.
scroll double window at the same time

while using Split Editing, you can use [alt+up] and [alt+down] to scroll
double window at the same time.