The Standard Portuguese writing system, as well as that used for Brazilian Portuguese, is based on the Latin alphabet with 26 letters. Despite several attempts at orthographic reform during the 20th century (the last attempt taking place in 1990), Portugal and Brazil still do not share a standard form of the written language.
- Use of the following diacritic or “accent” marks1
- The tilde (˜) to show “nasalized” vowel sounds.
- The grave accent (for example, “À”).
- The dieresis mark with the letter u (“ü”).
- The cedilla with the letter c (“Ç”).
- Three of the 26 letters in the Standard and Brazilian Portuguese alphabets — K, W and Y — are reserved for spelling loan words from other languages.
- Acute and circumflex accents (´ and ˆ) to indicate stressed syllables.
1 “Portuguese alphabet” Wikipedia
[Accessed November 25, 2004]