Sort

Alt+S sorts the files by Name, Ext, Date or Size. Order toggles ascending and descending, and Path first groups the files by directory in Branch and Showall (both keep the menu open, so you can choose the key next).

The current order appears in the file window’s title (Size↓) and the cursor stays on the same file. Each window has its own order; the initial one comes from sort and sort_descending in the configuration, and new windows (F8, Log) inherit the current one.