How do you insert subscripts and superscripts into ordinary (non-formula) text in LibreOffice Writer?

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Keyboard Shortcut

As detailed on the LibreOffice help site:

  • For superscript: Ctrl + SHIFT + P
  • For subscript: Ctrl + Shift + B

For a GUI solution

Use Tools -> Customize... to open the following dialogue, then navigate as shown in the screenshot below:

sub/sup menu items

Adding these will add them to the menu bars and thus give easy gui-based formatting, as opposed to a shortcut.