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The HN style guide lowercases acronyms like PSI to Psi, unfortunately.

• joshschreuder 5y ago
  Source? I can think of a number that aren’t, and a bunch currently on the frontpage (as specific as “CSAM”, and as widely used as “IP”).
  • easton 5y ago
    HN automatically converts to titlecase on submit, if you click edit and change the title to how you want it won’t mess with it again.
    • floatingatoll 5y ago
      (Mods still might, if they’re in the mood.)