Its color bar flashes several signals:
If one timeframe is in a buy mode and the other in a sell mode, the signal is "No Trade Allowed", a red bar.
If both are neutral, then any trades are allowed, showing a blue bar.
When one is while the other is either or neutral, there is a green bar, allowing traders to buy and prohibiting shorting.
When one is while the other is either or neutral, a red bar signals that shorts are permitted, while long trades are not allowed.
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