此示例添加四个元素，有些具有小写键，有些具有大写键。

The example adds four elements, some with lower-case keys and some with upper-case keys.

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如果你怀念大写键，那也没关系，你可以点击右上方的扳手按钮重新设置，这里汇聚了系统的所有设置选项。

If you miss the caps lock key, it can be remapped by clicking on the wrench icon in the top-right. That's where all the system Settings live.

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大写键可以直接打印，键盘驱动程序可以对很多更为特殊的情况进行编码，但是其模型是相同的：按下一个键就代表输入某个特定的字符。

The key caps may be printed differently, and the keyboard driver may encode a few more special cases, but the model is the same: Press a key to type a specific character.

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