[amibroker] Barsince used twice in a row.

["Techguy" <forex_bots@xxxxxxxxxxx>]

I'm having problems comprehending this double BarsSince statement from
the TD Sequential script:

/***********SetupSell************/
TD1=IIf(Close>Ref(Close,-4),1,0);
TD2=IIf(BarsSince(BarsSince(TD1))==Opt1, 1,0);
TD3= Ref(L,-1)<=Ref(HHV(H,Opt1-4),-3);
TD4= Ref(C,-Opt1)<=Ref(C,-Opt2);
SetupSell= TD3 AND TD2 AND TD4 ;

Could someone explain why BarsSince is used twice?

Thanks,





------------------------ Yahoo! Groups Sponsor --------------------~--> 
Put more honey in your pocket. (money matters made easy).
http://us.click.yahoo.com/r7D80C/dlQLAA/cosFAA/GHeqlB/TM
--------------------------------------------------------------------~-> 

Please note that this group is for discussion between users only.

To get support from AmiBroker please send an e-mail directly to 
SUPPORT {at} amibroker.com

For other support material please check also:
http://www.amibroker.com/support.html

 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/amibroker/

<*> To unsubscribe from this group, send an email to:
    amibroker-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/