XYplorer Beta Club

Hello,
could you tell me why there is one tree entry (folder) with a green background? After having selected another folder, and another one, the "green" one stays green. A right-click with the mouse on this green entry does NOT give any clue why this entry is green.

probably it's a color filter that show "modified this day".
you can switch it off with F9 > F3 > type= Apply color filters to the Tree (Color Filters) > uncheck

Thank you very much, eil, for your kind help! It was "color filter" indeed, with the key words you gave me I looked it up in the help file and then in Tools-Configuration. I hadn't been aware of such "color filters". Thank you so much!