Screen On mode questions

What exactly does Chime only in Screen On Mode mean? The wording on that setting is unclear. What happens if I check that setting? I’m using new Samsung Note8.

It meas that app will play sound only when device screen is turned on = device is “used”. Let’s say you set chime for night hours but it will play sounds only when you use device - if you sleep and screen is turned off then it won’t play sounds.

If you have suggestion for better and short name for this setting please let me know.