... be set by two buttons,displaying contents includes(B,G,M,F,L,E,0,1,2,3,4,5,6,7 ... time,press C_KEY incremental button to select among(B,G,M,F,L,E,0,1,2,3,4,5,6,7 ... ,and press C_KEY incremental button to select among(B,G,M,F,L,E,0,1,2,3,4,5,6,7 ...