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" ... Subscripts and superscripts: I used equations with subscripts and superscripts in some posts. They appeared correctly in the visual editor but were lost when I previewed. I searched the Web and discovered that the html code uses <super> and </super> for superscripts and <sub> and</sub> for subscripts. I went to insert these in the html code but saw they were already there. This was a case where I inserted the correct code but it didn’t work. Luckily, I found a blog that discussed what to do when <super> and <sub> don’t work. The solution: Use ... "