Is there any other reason not to use superscript characters for abbreviations in plain text? (Except those reasons already discussed, that sum up in the compatibility issue when it comes to rich text.) (Same question for subscript digits for vulgar fractions, that may be considered a kind of abbreviations: - 'Page two of seven' is represented as 'Page 2/7'; - 'Two seventh' is (or should be) represented as '²⁄₇'.)
Iʼm asking this question now as long as this thread is not closed. Iʼm not in the habits of asking many questions, but perhaps this one I should have asked. Marcel