/** @language chinese
 * <p>设置全屏时，首先需要设置舞台的缩放模式<a href="LStageScaleMode.html">LGlobal.stageScale</a>。</p>
 * <p>设置完舞台的缩放模式之后，调用<a href="LGlobal.html#method_screen">LSystem.screen(LStage.FULL_SCREEN);</a>就可以实现全屏</p>
 * <p>※对于手机网页，需要在head标签里加上下面标签。</p>
 * <pre class="code prettyprint prettyprinted"><code><span class="tag">&lt;meta</span><span class="pln"> </span><span class="atn">name</span><span class="pun">=</span><span class="atv">"viewport"</span><span class="pln"> </span><span class="atn">content</span><span class="pun">=</span><span class="atv">"width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"</span><span class="tag">&gt;</span></code></pre>
 * @class 全屏设置
 * @since 1.6.0
 * @public
 */