指标通过计算价格在特定周期内的相对位置，生成两条核心曲线K与D，并辅以多条辅助均线。它利用交叉信号进行买卖提示：当D线向上穿越K线时标记卖出信号，当K线向上穿越D线时标记买入信号。整体用于判断短期超买超卖状态及趋势转折点。
VAR1:=LLV(LOW,21);
VAR2:=HHV(HIGH,21);
K: EMA((CLOSE-VAR1)/(VAR2-VAR1)*100,6),COLORRED;
D: EMA(0.667*REF(K,1)+0.333*K,2),COLORGREEN;
VAR3:=LLV(LOW,55);
VAR4:=HHV(HIGH,34);
VAR5:=EMA((CLOSE-VAR3)/(VAR4-VAR3)*100,3);
VAR6:=(K+VAR5)/2;
VAR7:=EMA(0.667*REF(VAR5,1)+0.333*K,2);
VAR8:=EMA(VAR6,5);
VAR9:EMA(0.667*REF(VAR8,1)+0.333*VAR8,2);
DRAWICON(LONGCROSS(D,K,0.1),D,2),COLORRED;
DRAWICON(LONGCROSS(K,D,0.1),K,1),COLORGREEN;
