Glossary : A : active result set
  
active result set
The most recent set of features returned after you have performed a search or a selection. By default, the features returned from the last search or selection are displayed in the Results window. You can have multiple Results windows if they have run multiple searches or performed multiple selections during the same session. You have the option of selecting any result set in the Result window to make it the active result set. Only one result set can be active at any time.