周一至四收盘前3分钟平掉一半仓位，周五则是全部平掉

if weekday<=4 and time0<=timetot0(closetime(0))-180 then begin

   sell(1,holding/2,market);

   sellshort(1,holding/2,market);

end

if weekday=4 and time0<=timetot0(closetime(0))-180 then begin

   sell(1,0,market);

   sellshort(1,0,market);

end