如果您想实际体会一下这个bug，试着使用- s选项，这样程序运行时您就有足够的时间在不同的终端间切换并且进行观察。
If you want to see this bug in action, try using the -s option, which will give you enough time to swap from one terminal to another and investigate.
使用鼠标导航已经非常简单了，但 Sugar 还允许使用控制键在应用程序和模式间更快地切换。
Using the mouse to navigate is simple enough, but Sugar allows control keys for faster transitions between applications and modes.
PD F文件的标签阅读体式格局：迅速在不同文件间切换。无论是切换或退出或是再返回到应用程序时，切换设置及页地点的位置会被自动记录。
Tabbed PDF Reading: quickly switch between multiple documents. TAB setup and page locations are always remembered, whether switching tabs or quitting and returning to the app.
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