Keyboard ancient secrets

Alt code

The combination Alt+163 (163 from Numpad keys) would result in ú, which is at 163 in the OEM code page of CP437 or CP850.

Use Word or Wordpad to input Unicode chars. VSCode can display but cannot input Unicode character.

Use this page to lookup Emoji Unicode character by name. Or this page, with decimal / hexa code number. Or simply google: Unicode character [name or keywords]

Mac and Linux have the similar techniques.