如果你由其它来源引用文字，只加脚注是不足的，一定要加上引号。
If you take words from a source, you must use quotation marks, not just a footnote.
字符和已解析实体引用替换为文字字符(特殊字符除外)。
Character and parsed entity references are replaced with the literal characters (excepting special characters).
在绘图工具中，需要引用其他流程时，必须采用文字对其进行描述，如图11中所示。
In a drawing tool, when you refer to a different process you have to describe it in words, as Figure 11 shows.
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