Hello there,
as mentioned above:
Is it possible to lock the border in dual-view-mode?
Regards
Marc
You can't prevent the splitter from being moved if you click on it and drag.
But you can double-click the splitter to reset the position.
You can also make buttons or hotkeys which snap the splitter to a predefined position.
Lister styles can also set the slider position.
So if you drag it by accident, there are several quick ways to set or reset it to exactly what you want again.