Rich Text Format (RTF) 中文版规范，版本 1.6[4]

RTF 文件内容
        一个 RTF 文件符合以下语法：
        <File>'{' <header> <document> '}' 
        本语法是标准的RTF语法，任何RTF查看器都应该可以正确的解释以此语法格式写出的RTF文件。有必要重申的是：RTF查看器没有必要包含所有的控制字，但它必须能够无害的忽略它不知道（或者未使用）的控制字，并且必须能正确的略过被控制字符号标记的部分。然而，生成RTF的编辑器有可能并没完全符合这个语法规范，同样地，RTF查看器应该有足够能力去处理一些细微变更的控制字。虽然如此，如果一个生成RTF的编辑器符合本规范，那么任何一个正确的RTF查看器都应该能够完美的解释它。
An RTF file has the following syntax:
            <File>'{' <header> <document> '}'
This syntax is the standard RTF syntax; any RTF reader must be able to correctly interpret RTF written to this syntax. It is worth mentioning again that RTF readers do not have to use all control words, but they must be able to harmlessly ignore unknown (or unused) control words, and they must correctly skip over destinations marked with the \control* symbol. There may, however, be RTF writers that generate RTF that does not conform to this syntax, and as such, RTF readers should be robust enough to handle some minor variations. Nonetheless, if an RTF writer generates RTF conforming to this specification, then any correct RTF reader should be able to interpret it.