撤单曲线
卖出撤单:WIDTHDRAWORDER(2),colorred,linethick1; 买进撤单:WIDTHDRAWORDER(1),colorgreen,linethick1; 撤卖单累计:sum(卖出撤单,0)/20,colorblue,linethick2; 撤买单累计:sum(买进撤单,0)/20,colorwhite,linethick2; 净撤量:撤卖单累计-撤买单累计;
