RFC 2646:The Text/Plain Format Parameter
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interoperabilit


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... Interoperability problems have been observed with erroneous labelling of paragraph text as Text/Plain, and with various forms of ...


... Some interoperability problems have been observed with this media type: ...
... A proposal to define a new media type to explicitly represent the paragraph form suffered from a lack of interoperability with currently deployed software. Some programs treat unknown subtypes of Text as an attachment. ...


... currently deployed software treats flowed lines as normal Text/Plain (which is what they are). Thus, no interoperability problems are expected. ...



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