Portuguese orthography is based on the Latin alphabet and makes use of the acute accent, the circumflex accent, the grave accent, the tilde, and the cedilla, to denote stress, vowel height, nasalization, and other sound changes. Accented letters and digraphs are not counted as separate characters for collation purposes.
The spelling of Portuguese is largely phonemic, but some phonemes can be spelled in more than one way. In ambiguous cases, the correct spelling is determined through a combination of etymology with morphology and tradition so there is not a perfect one-to-one correspondence between...