-------------------○===================================> -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 ----------------------------------------------○========> -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 <===============●--------------------------------------- -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 Use an open circle "○" with < or >. Use a closed circle "●" with < or >. Edwin