How to combine subscript and superscript in word 13
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So, when the chemical formulae for carbon-dioxide and water need inferior twos, this is a job for sinf: May also replace lowercase characters with alphabetic inferiors. Replaces lining or oldstyle figures with inferior figures (smaller glyphs which sit lower than the standard baseline, primarily for chemical or mathematical notation).
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Theoretically, OpenType features are not supposed to do that, but in this case, Unicode already had subscript figures encoded, so we might as well reuse them for the feature.Īnd sinf (scientific inferiors) is intended for scientific use: The point, again, is that subs can trigger a ‘change of semantic value’, i.e.
HOW TO COMBINE SUBSCRIPT AND SUPERSCRIPT IN WORD 13 CODE
Besides the original character codes, the application should store the code for the new character. Note: This is a change of semantic value. The ‘subs’ feature may replace a default glyph with a subscript glyph, or it may combine a glyph substitution with positioning adjustments for proper placement. What? Two different OpenType features for subscripts? In the official wording, subs (subscript) is for: So, our feature code is OK, and that is why we recommend this method whole-heartedly. There are, however, a few exceptions, and luckily, sups is one of them. The magic word here is ‘change of semantic value.’ OpenType features usually are not supposed to do that, i.e., change the Unicode value, and thus, change the semantic value. This can include a change of semantic value. According to the official spec, that is OK: Thus, the feature will mess with the characters. Please note that with this method, the superior glyphs will receive separate Unicode values.