You can read the explanation in the proposal, which will tell you everything, at http://www.unicode.org/L2/L2019/19025-terminals-prop.pdf http://www.unicode.org

You can read the explanation in the proposal, which will tell you everything, at http://www.unicode.org/L2/L2019/19025-terminals-prop.pdf http://www.unicode.org/L2/L2019/19025-terminals-prop.pdf .