In addition to these acting spaces, there may be offstage spaces as well. These include wings on either side of a proscenium stage (called "backstage" or "offstage") where props, sets and scenery may be stored as well as a place for actors awaiting an entrance. A Prompter's box may be found backstage. In an amphitheater, an area behind the stage may be designated for such uses while a blackbox theater may have spaces outside of the actual theater designated for such uses.