观看以下视频，了解如何将本站安装为Web应用到您的主屏幕。
注意： 此功能可能在某些浏览器中不可用。
Renamed Upgrade.php to UpgradeService.php.
Previous version packaged incorrectly.
![[AndyB] User upgrade direct message](/data/resource_icons/20/20381.jpg?1720149340){kind=icon}