to add to the horizontal or vertical position of the managed sprite in each screen horizontal line.</dd>
            <dt>
              <span class="m-doc-wrap-bumper">void <a href="#a5708c56be105f11801bed262680975a6" class="m-doc">set_deltas_ref</a>(</span><span class="m-doc-wrap">const <a href="classbn_1_1span.html" class="m-doc">span</a>&lt;const <a href="namespacebn.html#a0de0484a51e353c5b48db21590f4dfc9" class="m-doc">fixed</a>&gt;&amp; deltas_ref)</span>
            </dt>
            <dd>Sets the refe