-h perhaps the only useful comment here. -R just looks baroque, but ls(1) might think it fine. I once read an article about the inconsistencies in *nix CLI commands, but the picture's much better than hot-key and shortcut conflicts- <which get silently absorbed by whatever's running, no way to tell what they might've done or where they went..> I hestitate to consult documentation, because of course there is non anymore. Why not Google it?