Underscores are difficult to distinguish from underlining. That's just one issue. Underscores_make_full_highlighting_easy Dashes-make-single-highlighting-easy

Underscores are difficult to distinguish from underlining. That's just one issue. Underscores_make_full_highlighting_easy Dashes-make-single-highlighting-easy It's also a use case thing. Double click on each sentence and note the behavior. It depends on which one you want. We use snake case in our urls because you can copy something from the documentation and easily highlight a portion to change.