{新笔段}
var1:="chzhshch@kxian";
var2:="chzhshch@bi";{处理笔关系}
drawline(var2=1,h,var2=-1,l,0),linedot,coloryellow;
drawline(var2=-1,l,var2=1,h,0),linedot,coloryellow;
var3:="chzhshch@duan";{处理段关系}
drawnumber(var3=1,h,h,2),pxup20,colormagenta,align2;
drawnumber(var3=-1,l,l,2),pxdn5,colorgreen;
drawline(var3=1,h,var3=-1,l,0),colorFF6600;
drawline(var3=-1,l,var3=1,h,0),colorFF6600;