is there any script (or ea) for closing all open positions from only one pair??

and sorry for a new question, but do you know if our brokers are able to see our charts? I mean, for example, can my broker see what indicators I am using in my mt4 charts? I am not meaning if my broker is able to detect if I am using an ea o some indicators, but I mean if you know if our brokers are able to see which concrete indicators and which concrete ea we are using? have you got any idea about it?
 
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