Movable panes and a visible grid toolbar
Move the grid and Notes. Drag either grip to a highlighted edge to swap sides or dock. Drop outside to separate the windows. Scratch remembers the layout and window positions. Click a grip for the same commands. Move or detach panes.
Find the grid tools above the formula bar. Click Freeze, Sort, Filter or Export. The Export button offers the selection or sheet as a CSV and still works as a drag handle. Grid toolbar.