对于不常见的错误，您必须拥有灾难恢复文档。
For uncommon errors, you must have disaster recovery documentation.
对于每个受支持的操作，设计所有错误的填充方法，例如空格、很长的字符串、格式错误的数据、重音字符或不常见的字符。
For each supported action, devise all the wrong ways to fill it in, such as blank, very large strings, ill-formatted data, or accented or unusual characters.
考虑用户对UI可能执行的所有动作，例如单击错误的位置或输入无效的值、重音字符或不常见的字符。
Consider all the other things a user might do with the UI, such as clicking the wrong points or entering invalid values, accented characters, or unusual characters.
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