The scratch-and-win specialist marks the keys with printed codes and covers them with a special scratch-off layer (thermochromatic or other security inks could be used).

刮奖专家以印好的编码作为标记，并在上面覆盖一层可以挂掉的特殊涂层（可以使用热变色油墨或其他安全油墨）。

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The mappings between keys and key codes are device and operating system dependent. ASCII values, on the other hand, are available in the ActionScript documentation.

在键和键代码之间的映射是依赖设备和操作系统。ASCII值，在另一方面，在AS文档中是可用的。

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Some frameworks also provide a series of standardized key codes that represent keyboard-based events (such as hitting the Escape key, Return key, cursor keys, and so forth).

有些框架还会提供一组标准键盘代码来表示基于键盘的事件(如按下escape键、return键、光标键，等等)。

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The user must then retrieve all the codes, or keys, and enter them into fields on Facebook's password-recovery page to log back in, a Facebook spokeswoman said in an e-mail.

CNN: Mark Milian,