{1.股价跌破XS1（薛斯通道）外下轨道线的股票}XG:CROSS(XS.LDN,C);================={2.股价跌破XS2（薛斯通道2）外下外轨道线股票}M:=7;CC:=ABS((2*CLOSE+HIGH+LOW)/4-MA(CLOSE,20))/MA(CLOSE,20); DD:=DMA(CLOSE,CC); 通道4:=(1-M/100)*DD;XG:CROSS(通道4,C);
