N:=12;
HH:=H>HV(H,N);
NH:=BARSLAST(HH)+1;
LL:=L<LV(L,N);
NL:=BARSLAST(LL)+1;
AH:=CROSS(BACKSET(COUNT(LL,NH)&&LL,NH),0.5);
AL:=CROSS(BACKSET(COUNT(HH,NL)&&HH,NL),0.5);
AHH:=CROSS(BACKSET(COUNT(LL,NH)&&LL||ISLASTBAR,NH),0.5);
ALL:=CROSS(BACKSET(COUNT(HH,NL)&&HH||ISLASTBAR,NL),0.5);
DRAWLINE1(CROSS(AH=1,0.5),H,CROSS(AL=1,0.5),L,0),LINETHICK4,COLORGREEN;
DRAWLINE1(CROSS(AL=1,0.5),L,CROSS(AH=1,0.5),H,0),LINETHICK4,COLORRED;
DRAWLINE1(CROSS(AHH=1,0.5),H,CROSS(ALL=1,0.5),L,0),DOT,COLORGREEN;
DRAWLINE1(CROSS(ALL=1,0.5),L,CROSS(AHH=1,0.5),H,0),DOT,COLORRED;
AX:AH||AL||AHH||ALL,NODRAW;
DRAWCOLORKLINE( VALUEWHEN(AX,(AH||AHH)&&NOT(AL||ALL)),COLORGREEN,1);
DRAWCOLORKLINE( VALUEWHEN(AX,(AL||ALL)&&NOT(AH||AHH)),COLORRED,1);
DRAWCOLORKLINE( VALUEWHEN(AX,(AH||AHH)&&(AL||ALL))&&VALUEWHEN(AX,REF(VALUEWHEN(AX,AL||ALL),1)),COLORGREEN,1);
DRAWCOLORKLINE( VALUEWHEN(AX,(AL||ALL)&&(AH||AHH))&&VALUEWHEN(AX,REF(VALUEWHEN(AX,AH||AHH),1)),COLORRED,1);
DRAWCOLORKLINE( VALUEWHEN(AX,(AH||AHH)&&NOT(AL||ALL))&&ISDOWN,COLORGREEN,0);
DRAWCOLORKLINE( VALUEWHEN(AX,(AL||ALL)&&NOT(AH||AHH))&&ISDOWN,COLORRED,0);
DRAWCOLORKLINE( VALUEWHEN(AX,(AH||AHH)&&(AL||ALL))&&VALUEWHEN(AX,REF(VALUEWHEN(AX,AL||ALL),1))&&ISDOWN,COLORGREEN,0);
DRAWCOLORKLINE( VALUEWHEN(AX,(AL||ALL)&&(AH||AHH))&&VALUEWHEN(AX,REF(VALUEWHEN(AX,AH||AHH),1))&&ISDOWN,COLORRED,0);
DRAWTEXT(CROSS(AH=1,0.5)&&COUNT(CROSS(AH=1,0.5),BARSLAST(CROSS(AL=1,0.5))+1)=1,H,'S'),COLORGREEN,FONTSIZE25;
DRAWTEXT(CROSS(AL=1,0.5)&&COUNT(CROSS(AL=1,0.5),BARSLAST(CROSS(AH=1,0.5))+1)=1,L,'B'),VALIGN0,COLORRED,FONTSIZE25;
空:IF(BARSLAST(CROSS(AHH=1,0.5))<BARSLAST(CROSS(ALL=1,0.5)),1,NULL),COLORGREEN,NODRAW;
多:IF(BARSLAST(CROSS(AHH=1,0.5))>BARSLAST(CROSS(ALL=1,0.5)),1,NULL),COLORRED,NODRAW;
请老师帮我删除红绿线；其它都不动。
（来源：文华财经）
