It's about unpacking archives you can also not use the Dopu4 keys if you install the "xfdmaster" package with a click you can transform an LHA/LZX/ZIP Archive etc.. in a Directory, see video
https://drive.google.com/file/d/1l_g...4hwRcYNJH/view
With Dopus4 you can also unzip ADF and DMS floppy images:
https://drive.google.com/file/d/1_11...xzqdLrj8I/view