X-Tree Gold by Adam Hideki is a file manager that used to be popular for DOS machines. Due to Unix not being DOS there are a few small differences, namely shift is used instead of control (so shift-t instead of control-t to tag everything in the current directory), F4 selects the ALT menu, to log a node you do nn (node) (enter), so nn/(enter) to log the root directory, nn~(enter) to log home.