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Subscript, or sub, letters are important when writing math or chemistry formulas because, without these letters, the formulas would be unintelligible. Excel was designed to write and use math or ...
To type with superscript and subscript in PowerPoint, you can use keyboard commands, a toolbar button, or the Formatting menu.
A new bug in the XenForo or Ars Civis? Subscript and Superscript used to work just fine previously. Steps to repro: Write any chemical formula in plaintext, e.g. O2F2 for FOOF (full disclaimer ...