In MediaWiki syntax, four tildes are used as a shortcut for a user's signature. The letters "e" and "o" may vary in pronunciation, as indicated above by tildes (~). Due to printing difficulties, carons are used instead of tildes. The codice 14 package also supports entering tildes directly, e.g., codice 15. In the remainder, the tildes will be dropped for ease of notation. Tildes denote nasalized vowels and underlining denotes murmured vowels. Tildes denote nasalized vowels, while grave and acute accents denote low and high tones respectively.