Abbreviation Is Still Better Than No Text
Another post about lift. A lot of people made posts about open/close button. I just moved to a new place, and I found this open/close buttons. It works well, at least for me, I put less thinking when I need to hold the lift for someone.
Similar to the usage of icons on web/app. It’s important to show the label, unless it’s a very common icon like Play icon on a video.