What it does through using please readers and friends. If you don't think that color speaks just complete this sentence, "red means ---- and green means -" a child can ascertain what red means stop and green means travel. There is always opertation to attend or a deadline to meet. https://Www.Digitaljournal.com/pr/news/press-advantage/alpha-therapeutics-llc-announces-launch-1827760395.html