@David Baay D doesn't work if the PRV is undocked, so the only way at the moment is to use 2 Tabs and Ctrl+TAB and Ctrl+Shift+Left or Right to switch between them. But a solution for those who work with the docked PRV. Since last week I have 3 42" 4K  Screens (before I had just 2) , so Space enough to fill with windows:) Don't know why this guy just want to use the Keyboard, to edit you have to use the mouse, so why? Doesn't matter!   Bassman