[amibroker] ExRem Function?

["pa299pa299" <pa299@xxxxxxxxxxxxx>]

Hi
Can someone please confirm this is correct?

In the below example the ExMem function will buy on first true 
occurance of buy rule and will not buy again until the sell rule has 
been triggered

Buy = Open > Ref( High, -1 );
Sell=Cross( MA(Close, 20 ), Close );
Buy = ExRem( Buy, Sell );

If you just had the code 
Buy = Open > Ref( High, -1 );
Sell=Cross( MA(Close, 20 ), Close );
Then the system could buy multiple times before the sell signal is 
triggered?

Thanks
peter






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