            <dd>Changes the horizontal stretch of the mosaic applied to the backgrounds when the action is updated a given number of times.</dd>
            <dt>
              class <a href="classbn_1_1bgs__mosaic__vertical__stretch__manager.html" class="m-doc">bn::bgs_mosaic_vertical_stretch_manager</a>
            </dt>
            <dd>Manages the vertical stretch of the mosaic applied to the backgrounds.</dd>
            <dt>
              class <a href="classbn_1_1bgs__mosaic__vertical__stretch__to__act