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Ive spotted a sign which uses superscript text for a meaningful abbreviation. Doesn that mean that all the superscripted letters should be encoded in Unicode?

April 26, 2017abbreviation letters mean meaningful spotted superscript text uses

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Ive spotted a sign which uses superscript text for a meaningful abbreviation. Doesn that mean that all the superscripted letters should be encoded in Unicode?

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No. It’s common for specific formatting to be used to convey some of the semantic content—the meaning—of a text. As for italics, bold, or any other stylistic effect of this sort conveying meaning, the appropriate mechanism to use in such cases is style or markup in rich text.