[EquisMetaStock Group] request help reading this formula

["PTC Man" <ptc_man@xxxxxxxxxx>]

Hi
 
Can any one help me how do read this 
formula?
 
<FONT face=Arial 
size=2>HLd:=If(CLOSE>Ref(Mov(H,3,E),-1),{then}1,{else}If(CLOSE<Ref(Mov(L,3,E),-1),{then}-1,{else}0));HLv:=ValueWhen(1,HLd<>0,HLd);HiLo:=If(HLv=-1,{then}Mov(H,3,E),{else}Mov(L,3,E));HiLo;
 
 
 
HLd:=If(CLOSE>Ref(Mov(H,3,E),-1), {then}1, 
{else}If(CLOSE<Ref(Mov(L,3,E),-1) , {then}-1, {else}0));
I can't understand the (-1) and (1) 
reference.
 
Then we have
 
If HLv = -1 ????
 
I would apreciate any help
 
Thank's
Regards

 







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