«The Unicode® Standard Version 11.0 – Core Specification»(pdf). Unicode Consortium(en inglés). 30 de junio de 2018. Archivado desde el original el 19 de septiembre de 2018. Consultado el 1 de enero de 2019. «Plain text is a pure sequence of character codes; plain Unicode-encoded text is therefore a sequence of Unicode character codes. In contrast, styled text, also known as rich text, is any text representation consisting of plain text plus added information such as a language identifier, font size, color, hypertext links, and so on.»
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«The Unicode® Standard Version 11.0 – Core Specification»(pdf). Unicode Consortium(en inglés). 30 de junio de 2018. Archivado desde el original el 19 de septiembre de 2018. Consultado el 1 de enero de 2019. «Plain text is a pure sequence of character codes; plain Unicode-encoded text is therefore a sequence of Unicode character codes. In contrast, styled text, also known as rich text, is any text representation consisting of plain text plus added information such as a language identifier, font size, color, hypertext links, and so on.»