主题：谁来帮我解释解释这个交易指标

//移动止损范移
VARIABLE: aspect=0;//初始化假定做多头
VARIABLE: stopprice=0;//止损价格变量
VARIABLE: stopnum=0;//止损价差
RUNMODE:0;//工作于逐周期模式

if barpos = 0 then
  stopprice := l - stopnum;
 if aspect = 0 then
 begin
 //多头处理
 if l <= stopprice then
 begin
 //多反空
 aspect:=1;
 stopprice := h+stopnum;
 end
 
 //处理移动的底部
 if l - stopnum > stopprice then
 stopprice := l - stopnum;
 end
 
 if aspect = 1 then
 begin
 //空头处理
 if h >= stopprice then
 begin
 //空反多
 aspect:=0;
 stopprice:=l-stopnum;
 end
 
 //处理移动的底部
 if h + stopnum < stopprice then
  stopprice := h+stopnum;
 end
 
 //画线
 PARTLINE( aspect =0,stopprice,colorrgb(255,0,0));
 PARTLINE( aspect =1,stopprice,colorrgb(0,255,0));