One of the things Finder in OSX inherited from Classic was very good keyboard navigation, especially in List view. (Yeah, I know the NeXT folks are all addicted

One of the things Finder in OSX inherited from Classic was very good keyboard navigation, especially in List view. (Yeah, I know the NeXT folks are all addicted to columns, but Finder's hierarchical lists are better 90+% of the time.) E.g. command-up to go up level (to parent), command-down to go into a folder or open a document, right-arrow to disclose, left-arrow to fold, start typing to match any item, shift arrow to build a multi-select, and so on and so forth. Most of this dates back to System 3.x.