Overview of the user interface - Go up strips

"Go up strips" are vertical lines left of the left border of the left panel (and right of the right border of the right panel).

The position of the "Go up strips" in the main window is shown in chapter "Overview of the user interface".

Clicking one of these strips opens the parent folder of the actual folder in the corresponding panel.

Under the main menu item "Tools → Settings → View" the "Go up strips" can be configured.