If the screen buffer is larger than the console window, the console automatically displays scroll bars so the console window can be repositioned over the screen buffer area.

如果屏幕缓冲区比控制台窗口大，控制台会自动显示滚动条，以使控制台窗口可以在屏幕缓冲区上重新定位。

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Modifies style of scroll bar, and adds option of audio buffer length.

修改滚动条样式，增加音频缓冲选项。

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Two algorithms and their implementation of the 2D scroll game, whole area copy and four-part buffer, are introduced.

详细介绍2D卷轴游戏中的两种算法——整体Copy算法和四分缓冲区算法及其实现，并对比两者的差异。

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