Assertion: format | /r/HasAspect | excellent portability
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Source sentences:
text: The plain text format doesn't support digital rights management (DRM) or formatting options (such as different fonts, graphics or colors), but it has excellent portability as it is the simplest e-book encoding possible as a plain text file contains only ASCII or Unicode text (text files with UTF-8 or UTF-16 encoding are also popular for languages other than English).