Thanks, dired-hide-details-mode is particularly neato. I also learned a few things about marking.

I use emacs almost every day, and it's a continual source of frustration that the community seems allergic to sane defaults.

If the editor ships a built in file manager, that file manager should not require explicit configuration to open e.g. a jpeg in an image viewer by default. We've had `xdg-open` for years now, it's kind of absurd how far behind emacs is in so many ways.