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It is possible to create nested queries, where child query, further referred to as sub-query, filters the search results of its parent query.
To run a query, double-click the query name in the navigation area or select it and click the Run Query button 
in on the Application Toolbar.
After the query is ran for the first time, the number of bugs which this query contains is shown in blue next to the query 
. Queries which return empty results are grayed out 
.
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