主题：金字塔图表交易净仓的问题，求解答！

HOLDINGS:=A_HOLDING + B_HOLDING;
HOLDINGS1:=REF(HOLDINGS,1);

if strcmp(stklabel,'IH00')=0 AND HOLDINGS<>HOLDINGS1 then begin
IF HOLDINGS1<0 AND HOLDINGS>0 THEN BEGIN SELLSHORT(1,-HOLDINGS1,THISCLOSE);BUY(1,HOLDINGS,THISCLOSE);END
IF HOLDINGS1<0 AND HOLDINGS=0 THEN BEGIN SELLSHORT(1,-HOLDINGS1,THISCLOSE);END
IF HOLDINGS1<0 AND HOLDINGS<0 AND HOLDINGS1 IF HOLDINGS1<0 AND HOLDINGS<0 AND HOLDINGS1>HOLDINGS THEN BEGIN BUYSHORT(1,HOLDINGS1-HOLDINGS,THISCLOSE);END
IF HOLDINGS1=0 AND HOLDINGS>0 THEN BEGIN BUY(1,HOLDINGS,THISCLOSE);END
IF HOLDINGS1=0 AND HOLDINGS<0 THEN BEGIN BUYSHORT(1,HOLDINGS1-HOLDINGS,THISCLOSE);END
IF HOLDINGS1>0 AND HOLDINGS<0 THEN BEGIN SELL(1,HOLDINGS1,THISCLOSE);BUYSHORT(1,-HOLDINGS,THISCLOSE);END
IF HOLDINGS1>0 AND HOLDINGS>0 AND HOLDINGS1>HOLDINGS THEN BEGIN SELL(1,HOLDINGS1-HOLDINGS,THISCLOSE);END
IF HOLDINGS1>0 AND HOLDINGS>0 AND HOLDINGS1 IF HOLDINGS1>0 AND HOLDINGS=0 THEN BEGIN SELL(1,HOLDINGS1,THISCLOSE);END
END